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Finding the Fourth Proportional to 70,339.46, 97,067.98 and 38,508.90

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Solution

The fourth proportional to 70,339.46, 97,067.98 and 38,508.90 is: 53,142.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,339.46 : 97,067.98 = 38,508.90 : x
  2. Step 2: Convert to fraction form
    70,339.46/97,067.98 = 38,508.90/x
  3. Step 3: Cross multiply
    70,339.46x = 97,067.98 × 38,508.90
  4. Step 4: Simplify right side
    70,339.46x = 3,737,981,135.02
  5. Step 5: Solve for x
    x = 3,737,981,135.02/70,339.46
  6. Step 6: Final answer
    x = 53,142.02

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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.