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Finding the Fourth Proportional to 526,778.61, 726,956.40 and 285,061.16

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Solution

The fourth proportional to 526,778.61, 726,956.40 and 285,061.16 is: 393,385.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,778.61 : 726,956.40 = 285,061.16 : x
  2. Step 2: Convert to fraction form
    526,778.61/726,956.40 = 285,061.16/x
  3. Step 3: Cross multiply
    526,778.61x = 726,956.40 × 285,061.16
  4. Step 4: Simplify right side
    526,778.61x = 207,227,029,949.66
  5. Step 5: Solve for x
    x = 207,227,029,949.66/526,778.61
  6. Step 6: Final answer
    x = 393,385.43

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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.