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Finding the Fourth Proportional to 636,497.18, 880,679.11 and 554,995.27

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Solution

The fourth proportional to 636,497.18, 880,679.11 and 554,995.27 is: 767,910.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,497.18 : 880,679.11 = 554,995.27 : x
  2. Step 2: Convert to fraction form
    636,497.18/880,679.11 = 554,995.27/x
  3. Step 3: Cross multiply
    636,497.18x = 880,679.11 × 554,995.27
  4. Step 4: Simplify right side
    636,497.18x = 488,772,738,929.86
  5. Step 5: Solve for x
    x = 488,772,738,929.86/636,497.18
  6. Step 6: Final answer
    x = 767,910.30

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.