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Finding the Fourth Proportional to 140,373.54, 193,660.53 and 86,565.15

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Solution

The fourth proportional to 140,373.54, 193,660.53 and 86,565.15 is: 119,426.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,373.54 : 193,660.53 = 86,565.15 : x
  2. Step 2: Convert to fraction form
    140,373.54/193,660.53 = 86,565.15/x
  3. Step 3: Cross multiply
    140,373.54x = 193,660.53 × 86,565.15
  4. Step 4: Simplify right side
    140,373.54x = 16,764,252,828.53
  5. Step 5: Solve for x
    x = 16,764,252,828.53/140,373.54
  6. Step 6: Final answer
    x = 119,426.02

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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.