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Finding the Fourth Proportional to 88,653.20, 132,978.72 and 25,474.80

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Solution

The fourth proportional to 88,653.20, 132,978.72 and 25,474.80 is: 38,211.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,653.20 : 132,978.72 = 25,474.80 : x
  2. Step 2: Convert to fraction form
    88,653.20/132,978.72 = 25,474.80/x
  3. Step 3: Cross multiply
    88,653.20x = 132,978.72 × 25,474.80
  4. Step 4: Simplify right side
    88,653.20x = 3,387,606,296.26
  5. Step 5: Solve for x
    x = 3,387,606,296.26/88,653.20
  6. Step 6: Final answer
    x = 38,211.89

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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.