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Finding the Fourth Proportional to 83,298.56, 115,008.96 and 61,793.92

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Solution

The fourth proportional to 83,298.56, 115,008.96 and 61,793.92 is: 85,317.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,298.56 : 115,008.96 = 61,793.92 : x
  2. Step 2: Convert to fraction form
    83,298.56/115,008.96 = 61,793.92/x
  3. Step 3: Cross multiply
    83,298.56x = 115,008.96 × 61,793.92
  4. Step 4: Simplify right side
    83,298.56x = 7,106,854,473.52
  5. Step 5: Solve for x
    x = 7,106,854,473.52/83,298.56
  6. Step 6: Final answer
    x = 85,317.86

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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.