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Finding the Fourth Proportional to 107,915.60, 148,915.80 and 60,171.44

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Solution

The fourth proportional to 107,915.60, 148,915.80 and 60,171.44 is: 83,032.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,915.60 : 148,915.80 = 60,171.44 : x
  2. Step 2: Convert to fraction form
    107,915.60/148,915.80 = 60,171.44/x
  3. Step 3: Cross multiply
    107,915.60x = 148,915.80 × 60,171.44
  4. Step 4: Simplify right side
    107,915.60x = 8,960,478,124.75
  5. Step 5: Solve for x
    x = 8,960,478,124.75/107,915.60
  6. Step 6: Final answer
    x = 83,032.28

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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.