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Finding the Fourth Proportional to 526,780.11, 726,958.47 and 285,062.66

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Solution

The fourth proportional to 526,780.11, 726,958.47 and 285,062.66 is: 393,387.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,780.11 : 726,958.47 = 285,062.66 : x
  2. Step 2: Convert to fraction form
    526,780.11/726,958.47 = 285,062.66/x
  3. Step 3: Cross multiply
    526,780.11x = 726,958.47 × 285,062.66
  4. Step 4: Simplify right side
    526,780.11x = 207,228,711,532.94
  5. Step 5: Solve for x
    x = 207,228,711,532.94/526,780.11
  6. Step 6: Final answer
    x = 393,387.50

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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.