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Finding the Fourth Proportional to 67,221.94, 92,757.81 and 38,927.38

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Solution

The fourth proportional to 67,221.94, 92,757.81 and 38,927.38 is: 53,714.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,221.94 : 92,757.81 = 38,927.38 : x
  2. Step 2: Convert to fraction form
    67,221.94/92,757.81 = 38,927.38/x
  3. Step 3: Cross multiply
    67,221.94x = 92,757.81 × 38,927.38
  4. Step 4: Simplify right side
    67,221.94x = 3,610,818,517.84
  5. Step 5: Solve for x
    x = 3,610,818,517.84/67,221.94
  6. Step 6: Final answer
    x = 53,714.88

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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.