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Finding the Fourth Proportional to 66,800.76, 92,183.82 and 38,507.64

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Solution

The fourth proportional to 66,800.76, 92,183.82 and 38,507.64 is: 53,139.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,800.76 : 92,183.82 = 38,507.64 : x
  2. Step 2: Convert to fraction form
    66,800.76/92,183.82 = 38,507.64/x
  3. Step 3: Cross multiply
    66,800.76x = 92,183.82 × 38,507.64
  4. Step 4: Simplify right side
    66,800.76x = 3,549,781,354.38
  5. Step 5: Solve for x
    x = 3,549,781,354.38/66,800.76
  6. Step 6: Final answer
    x = 53,139.83

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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.