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Finding the Fourth Proportional to 609,349.12, 913,342.92 and 538,441.11

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Solution

The fourth proportional to 609,349.12, 913,342.92 and 538,441.11 is: 807,060.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,349.12 : 913,342.92 = 538,441.11 : x
  2. Step 2: Convert to fraction form
    609,349.12/913,342.92 = 538,441.11/x
  3. Step 3: Cross multiply
    609,349.12x = 913,342.92 × 538,441.11
  4. Step 4: Simplify right side
    609,349.12x = 491,781,375,655.44
  5. Step 5: Solve for x
    x = 491,781,375,655.44/609,349.12
  6. Step 6: Final answer
    x = 807,060.12

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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.