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Finding the Fourth Proportional to 351,548.48, 527,318.76 and 85,311.92

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Solution

The fourth proportional to 351,548.48, 527,318.76 and 85,311.92 is: 127,966.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,548.48 : 527,318.76 = 85,311.92 : x
  2. Step 2: Convert to fraction form
    351,548.48/527,318.76 = 85,311.92/x
  3. Step 3: Cross multiply
    351,548.48x = 527,318.76 × 85,311.92
  4. Step 4: Simplify right side
    351,548.48x = 44,986,575,867.62
  5. Step 5: Solve for x
    x = 44,986,575,867.62/351,548.48
  6. Step 6: Final answer
    x = 127,966.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.