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Finding the Fourth Proportional to 67,957.45, 93,781.92 and 39,657.67

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Solution

The fourth proportional to 67,957.45, 93,781.92 and 39,657.67 is: 54,727.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,957.45 : 93,781.92 = 39,657.67 : x
  2. Step 2: Convert to fraction form
    67,957.45/93,781.92 = 39,657.67/x
  3. Step 3: Cross multiply
    67,957.45x = 93,781.92 × 39,657.67
  4. Step 4: Simplify right side
    67,957.45x = 3,719,172,435.33
  5. Step 5: Solve for x
    x = 3,719,172,435.33/67,957.45
  6. Step 6: Final answer
    x = 54,727.96

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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.