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Finding the Fourth Proportional to 136,737.08, 188,644.56 and 85,660.92

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Solution

The fourth proportional to 136,737.08, 188,644.56 and 85,660.92 is: 118,179.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,737.08 : 188,644.56 = 85,660.92 : x
  2. Step 2: Convert to fraction form
    136,737.08/188,644.56 = 85,660.92/x
  3. Step 3: Cross multiply
    136,737.08x = 188,644.56 × 85,660.92
  4. Step 4: Simplify right side
    136,737.08x = 16,159,466,562.60
  5. Step 5: Solve for x
    x = 16,159,466,562.60/136,737.08
  6. Step 6: Final answer
    x = 118,179.11

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1.5x scale

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.