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Finding the Fourth Proportional to 67,006.80, 92,469.78 and 38,712.66

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Solution

The fourth proportional to 67,006.80, 92,469.78 and 38,712.66 is: 53,423.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,006.80 : 92,469.78 = 38,712.66 : x
  2. Step 2: Convert to fraction form
    67,006.80/92,469.78 = 38,712.66/x
  3. Step 3: Cross multiply
    67,006.80x = 92,469.78 × 38,712.66
  4. Step 4: Simplify right side
    67,006.80x = 3,579,751,153.41
  5. Step 5: Solve for x
    x = 3,579,751,153.41/67,006.80
  6. Step 6: Final answer
    x = 53,423.70

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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.