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Finding the Fourth Proportional to 885,738,491.10, 1,328,607,736.65 and 656,155,979.10

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Solution

The fourth proportional to 885,738,491.10, 1,328,607,736.65 and 656,155,979.10 is: 984,233,968.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,738,491.10 : 1,328,607,736.65 = 656,155,979.10 : x
  2. Step 2: Convert to fraction form
    885,738,491.10/1,328,607,736.65 = 656,155,979.10/x
  3. Step 3: Cross multiply
    885,738,491.10x = 1,328,607,736.65 × 656,155,979.10
  4. Step 4: Simplify right side
    885,738,491.10x = 871,773,910,281,415,808
  5. Step 5: Solve for x
    x = 871,773,910,281,415,808/885,738,491.10
  6. Step 6: Final answer
    x = 984,233,968.65

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Half scale
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Double scale
Find fourth proportional to 885,738,492.10, 1,328,607,738.15 and 656,155,980.10
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.