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Finding the Fourth Proportional to 88,532.40, 132,712.20 and 79,201.20

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Solution

The fourth proportional to 88,532.40, 132,712.20 and 79,201.20 is: 118,724.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,532.40 : 132,712.20 = 79,201.20 : x
  2. Step 2: Convert to fraction form
    88,532.40/132,712.20 = 79,201.20/x
  3. Step 3: Cross multiply
    88,532.40x = 132,712.20 × 79,201.20
  4. Step 4: Simplify right side
    88,532.40x = 10,510,965,494.64
  5. Step 5: Solve for x
    x = 10,510,965,494.64/88,532.40
  6. Step 6: Final answer
    x = 118,724.51

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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.