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Finding the Fourth Proportional to 106,915.20, 160,027.20 and 83,414.40

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Solution

The fourth proportional to 106,915.20, 160,027.20 and 83,414.40 is: 124,851.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,915.20 : 160,027.20 = 83,414.40 : x
  2. Step 2: Convert to fraction form
    106,915.20/160,027.20 = 83,414.40/x
  3. Step 3: Cross multiply
    106,915.20x = 160,027.20 × 83,414.40
  4. Step 4: Simplify right side
    106,915.20x = 13,348,572,871.68
  5. Step 5: Solve for x
    x = 13,348,572,871.68/106,915.20
  6. Step 6: Final answer
    x = 124,851.97

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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.