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Finding the Fourth Proportional to 140,357.90, 193,691.58 and 76,694.34

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Solution

The fourth proportional to 140,357.90, 193,691.58 and 76,694.34 is: 105,836.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,357.90 : 193,691.58 = 76,694.34 : x
  2. Step 2: Convert to fraction form
    140,357.90/193,691.58 = 76,694.34/x
  3. Step 3: Cross multiply
    140,357.90x = 193,691.58 × 76,694.34
  4. Step 4: Simplify right side
    140,357.90x = 14,855,047,891.66
  5. Step 5: Solve for x
    x = 14,855,047,891.66/140,357.90
  6. Step 6: Final answer
    x = 105,836.92

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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.