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Finding the Fourth Proportional to 85,592.88, 118,129.32 and 47,874.96

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Solution

The fourth proportional to 85,592.88, 118,129.32 and 47,874.96 is: 66,073.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,592.88 : 118,129.32 = 47,874.96 : x
  2. Step 2: Convert to fraction form
    85,592.88/118,129.32 = 47,874.96/x
  3. Step 3: Cross multiply
    85,592.88x = 118,129.32 × 47,874.96
  4. Step 4: Simplify right side
    85,592.88x = 5,655,436,469.83
  5. Step 5: Solve for x
    x = 5,655,436,469.83/85,592.88
  6. Step 6: Final answer
    x = 66,073.68

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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.