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Finding the Fourth Proportional to 108,645.60, 149,928.04 and 60,902.04

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Solution

The fourth proportional to 108,645.60, 149,928.04 and 60,902.04 is: 84,043.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,645.60 : 149,928.04 = 60,902.04 : x
  2. Step 2: Convert to fraction form
    108,645.60/149,928.04 = 60,902.04/x
  3. Step 3: Cross multiply
    108,645.60x = 149,928.04 × 60,902.04
  4. Step 4: Simplify right side
    108,645.60x = 9,130,923,489.20
  5. Step 5: Solve for x
    x = 9,130,923,489.20/108,645.60
  6. Step 6: Final answer
    x = 84,043.20

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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.