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Finding the Fourth Proportional to 527,011.81, 727,275.47 and 285,294.31

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Solution

The fourth proportional to 527,011.81, 727,275.47 and 285,294.31 is: 393,705.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,011.81 : 727,275.47 = 285,294.31 : x
  2. Step 2: Convert to fraction form
    527,011.81/727,275.47 = 285,294.31/x
  3. Step 3: Cross multiply
    527,011.81x = 727,275.47 × 285,294.31
  4. Step 4: Simplify right side
    527,011.81x = 207,487,553,393.58
  5. Step 5: Solve for x
    x = 207,487,553,393.58/527,011.81
  6. Step 6: Final answer
    x = 393,705.70

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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.