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Finding the Fourth Proportional to 539,612.76, 744,646.05 and 297,890.13

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Solution

The fourth proportional to 539,612.76, 744,646.05 and 297,890.13 is: 411,077.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,612.76 : 744,646.05 = 297,890.13 : x
  2. Step 2: Convert to fraction form
    539,612.76/744,646.05 = 297,890.13/x
  3. Step 3: Cross multiply
    539,612.76x = 744,646.05 × 297,890.13
  4. Step 4: Simplify right side
    539,612.76x = 221,822,708,638.49
  5. Step 5: Solve for x
    x = 221,822,708,638.49/539,612.76
  6. Step 6: Final answer
    x = 411,077.58

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Double scale
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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.