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Finding the Fourth Proportional to 539,641.44, 744,685.65 and 297,918.90

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Solution

The fourth proportional to 539,641.44, 744,685.65 and 297,918.90 is: 411,117.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,641.44 : 744,685.65 = 297,918.90 : x
  2. Step 2: Convert to fraction form
    539,641.44/744,685.65 = 297,918.90/x
  3. Step 3: Cross multiply
    539,641.44x = 744,685.65 × 297,918.90
  4. Step 4: Simplify right side
    539,641.44x = 221,855,929,693.79
  5. Step 5: Solve for x
    x = 221,855,929,693.79/539,641.44
  6. Step 6: Final answer
    x = 411,117.30

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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.