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Finding the Fourth Proportional to 66,757.77, 92,126.28 and 38,078.88

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Solution

The fourth proportional to 66,757.77, 92,126.28 and 38,078.88 is: 52,549.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,757.77 : 92,126.28 = 38,078.88 : x
  2. Step 2: Convert to fraction form
    66,757.77/92,126.28 = 38,078.88/x
  3. Step 3: Cross multiply
    66,757.77x = 92,126.28 × 38,078.88
  4. Step 4: Simplify right side
    66,757.77x = 3,508,065,560.97
  5. Step 5: Solve for x
    x = 3,508,065,560.97/66,757.77
  6. Step 6: Final answer
    x = 52,549.17

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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.