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Finding the Fourth Proportional to 66,605.82, 91,921.11 and 37,934.76

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Solution

The fourth proportional to 66,605.82, 91,921.11 and 37,934.76 is: 52,352.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,605.82 : 91,921.11 = 37,934.76 : x
  2. Step 2: Convert to fraction form
    66,605.82/91,921.11 = 37,934.76/x
  3. Step 3: Cross multiply
    66,605.82x = 91,921.11 × 37,934.76
  4. Step 4: Simplify right side
    66,605.82x = 3,487,005,246.78
  5. Step 5: Solve for x
    x = 3,487,005,246.78/66,605.82
  6. Step 6: Final answer
    x = 52,352.86

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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.