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Finding the Fourth Proportional to 140,125.78, 193,373.58 and 89,824.78

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Solution

The fourth proportional to 140,125.78, 193,373.58 and 89,824.78 is: 123,958.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,125.78 : 193,373.58 = 89,824.78 : x
  2. Step 2: Convert to fraction form
    140,125.78/193,373.58 = 89,824.78/x
  3. Step 3: Cross multiply
    140,125.78x = 193,373.58 × 89,824.78
  4. Step 4: Simplify right side
    140,125.78x = 17,369,739,281.31
  5. Step 5: Solve for x
    x = 17,369,739,281.31/140,125.78
  6. Step 6: Final answer
    x = 123,958.20

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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.