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Finding the Fourth Proportional to 527,610.89, 728,105.56 and 285,893.90

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Solution

The fourth proportional to 527,610.89, 728,105.56 and 285,893.90 is: 394,534.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,610.89 : 728,105.56 = 285,893.90 : x
  2. Step 2: Convert to fraction form
    527,610.89/728,105.56 = 285,893.90/x
  3. Step 3: Cross multiply
    527,610.89x = 728,105.56 × 285,893.90
  4. Step 4: Simplify right side
    527,610.89x = 208,160,940,630.81
  5. Step 5: Solve for x
    x = 208,160,940,630.81/527,610.89
  6. Step 6: Final answer
    x = 394,534.96

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1.5x scale

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.