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Finding the Fourth Proportional to 91,788.90, 137,686.72 and 25,234.24

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Solution

The fourth proportional to 91,788.90, 137,686.72 and 25,234.24 is: 37,852.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,788.90 : 137,686.72 = 25,234.24 : x
  2. Step 2: Convert to fraction form
    91,788.90/137,686.72 = 25,234.24/x
  3. Step 3: Cross multiply
    91,788.90x = 137,686.72 × 25,234.24
  4. Step 4: Simplify right side
    91,788.90x = 3,474,419,737.29
  5. Step 5: Solve for x
    x = 3,474,419,737.29/91,788.90
  6. Step 6: Final answer
    x = 37,852.29

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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.