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Finding the Fourth Proportional to 140,672.70, 194,132.70 and 77,016.42

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Solution

The fourth proportional to 140,672.70, 194,132.70 and 77,016.42 is: 106,285.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,672.70 : 194,132.70 = 77,016.42 : x
  2. Step 2: Convert to fraction form
    140,672.70/194,132.70 = 77,016.42/x
  3. Step 3: Cross multiply
    140,672.70x = 194,132.70 × 77,016.42
  4. Step 4: Simplify right side
    140,672.70x = 14,951,405,558.93
  5. Step 5: Solve for x
    x = 14,951,405,558.93/140,672.70
  6. Step 6: Final answer
    x = 106,285.05

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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.