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Finding the Fourth Proportional to 96,388.47, 132,942.60 and 64,065.15

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Solution

The fourth proportional to 96,388.47, 132,942.60 and 64,065.15 is: 88,361.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,388.47 : 132,942.60 = 64,065.15 : x
  2. Step 2: Convert to fraction form
    96,388.47/132,942.60 = 64,065.15/x
  3. Step 3: Cross multiply
    96,388.47x = 132,942.60 × 64,065.15
  4. Step 4: Simplify right side
    96,388.47x = 8,516,987,610.39
  5. Step 5: Solve for x
    x = 8,516,987,610.39/96,388.47
  6. Step 6: Final answer
    x = 88,361.06

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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.