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Finding the Fourth Proportional to 140,213.92, 193,374.48 and 124,921.12

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Solution

The fourth proportional to 140,213.92, 193,374.48 and 124,921.12 is: 172,283.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,213.92 : 193,374.48 = 124,921.12 : x
  2. Step 2: Convert to fraction form
    140,213.92/193,374.48 = 124,921.12/x
  3. Step 3: Cross multiply
    140,213.92x = 193,374.48 × 124,921.12
  4. Step 4: Simplify right side
    140,213.92x = 24,156,556,621.02
  5. Step 5: Solve for x
    x = 24,156,556,621.02/140,213.92
  6. Step 6: Final answer
    x = 172,283.58

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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.