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Finding the Fourth Proportional to 88,590.33, 132,912.31 and 31,656.78

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Solution

The fourth proportional to 88,590.33, 132,912.31 and 31,656.78 is: 47,494.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,590.33 : 132,912.31 = 31,656.78 : x
  2. Step 2: Convert to fraction form
    88,590.33/132,912.31 = 31,656.78/x
  3. Step 3: Cross multiply
    88,590.33x = 132,912.31 × 31,656.78
  4. Step 4: Simplify right side
    88,590.33x = 4,207,575,737.18
  5. Step 5: Solve for x
    x = 4,207,575,737.18/88,590.33
  6. Step 6: Final answer
    x = 47,494.75

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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.