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Finding the Fourth Proportional to 108,560.16, 149,812.20 and 60,813.90

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Solution

The fourth proportional to 108,560.16, 149,812.20 and 60,813.90 is: 83,922.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,560.16 : 149,812.20 = 60,813.90 : x
  2. Step 2: Convert to fraction form
    108,560.16/149,812.20 = 60,813.90/x
  3. Step 3: Cross multiply
    108,560.16x = 149,812.20 × 60,813.90
  4. Step 4: Simplify right side
    108,560.16x = 9,110,664,149.58
  5. Step 5: Solve for x
    x = 9,110,664,149.58/108,560.16
  6. Step 6: Final answer
    x = 83,922.72

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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.