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Finding the Fourth Proportional to 67,638.95, 93,335.61 and 38,950.97

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Solution

The fourth proportional to 67,638.95, 93,335.61 and 38,950.97 is: 53,748.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,638.95 : 93,335.61 = 38,950.97 : x
  2. Step 2: Convert to fraction form
    67,638.95/93,335.61 = 38,950.97/x
  3. Step 3: Cross multiply
    67,638.95x = 93,335.61 × 38,950.97
  4. Step 4: Simplify right side
    67,638.95x = 3,635,512,545.04
  5. Step 5: Solve for x
    x = 3,635,512,545.04/67,638.95
  6. Step 6: Final answer
    x = 53,748.80

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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.