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Finding the Fourth Proportional to 140,369.92, 193,714.80 and 79,938.88

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Solution

The fourth proportional to 140,369.92, 193,714.80 and 79,938.88 is: 110,318.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,369.92 : 193,714.80 = 79,938.88 : x
  2. Step 2: Convert to fraction form
    140,369.92/193,714.80 = 79,938.88/x
  3. Step 3: Cross multiply
    140,369.92x = 193,714.80 × 79,938.88
  4. Step 4: Simplify right side
    140,369.92x = 15,485,344,151.42
  5. Step 5: Solve for x
    x = 15,485,344,151.42/140,369.92
  6. Step 6: Final answer
    x = 110,318.11

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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.