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Finding the Fourth Proportional to 519,782.24, 718,001.56 and 391,688.97

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Solution

The fourth proportional to 519,782.24, 718,001.56 and 391,688.97 is: 541,059.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,782.24 : 718,001.56 = 391,688.97 : x
  2. Step 2: Convert to fraction form
    519,782.24/718,001.56 = 391,688.97/x
  3. Step 3: Cross multiply
    519,782.24x = 718,001.56 × 391,688.97
  4. Step 4: Simplify right side
    519,782.24x = 281,233,292,412.90
  5. Step 5: Solve for x
    x = 281,233,292,412.90/519,782.24
  6. Step 6: Final answer
    x = 541,059.83

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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.