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Finding the Fourth Proportional to 885,739,312.20, 1,328,608,968.30 and 656,156,800.20

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Solution

The fourth proportional to 885,739,312.20, 1,328,608,968.30 and 656,156,800.20 is: 984,235,200.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,739,312.20 : 1,328,608,968.30 = 656,156,800.20 : x
  2. Step 2: Convert to fraction form
    885,739,312.20/1,328,608,968.30 = 656,156,800.20/x
  3. Step 3: Cross multiply
    885,739,312.20x = 1,328,608,968.30 × 656,156,800.20
  4. Step 4: Simplify right side
    885,739,312.20x = 871,775,809,356,751,232
  5. Step 5: Solve for x
    x = 871,775,809,356,751,232/885,739,312.20
  6. Step 6: Final answer
    x = 984,235,200.30

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Half scale
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Double scale
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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.