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Finding the Fourth Proportional to 527,649.60, 728,159.02 and 285,932.12

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Solution

The fourth proportional to 527,649.60, 728,159.02 and 285,932.12 is: 394,587.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,649.60 : 728,159.02 = 285,932.12 : x
  2. Step 2: Convert to fraction form
    527,649.60/728,159.02 = 285,932.12/x
  3. Step 3: Cross multiply
    527,649.60x = 728,159.02 × 285,932.12
  4. Step 4: Simplify right side
    527,649.60x = 208,204,052,285.72
  5. Step 5: Solve for x
    x = 208,204,052,285.72/527,649.60
  6. Step 6: Final answer
    x = 394,587.72

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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.