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Finding the Fourth Proportional to 527,566.08, 728,040.17 and 285,855.20

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Solution

The fourth proportional to 527,566.08, 728,040.17 and 285,855.20 is: 394,479.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,566.08 : 728,040.17 = 285,855.20 : x
  2. Step 2: Convert to fraction form
    527,566.08/728,040.17 = 285,855.20/x
  3. Step 3: Cross multiply
    527,566.08x = 728,040.17 × 285,855.20
  4. Step 4: Simplify right side
    527,566.08x = 208,114,068,207.97
  5. Step 5: Solve for x
    x = 208,114,068,207.97/527,566.08
  6. Step 6: Final answer
    x = 394,479.62

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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.