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Finding the Fourth Proportional to 66,463.70, 91,719.54 and 36,248.45

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Solution

The fourth proportional to 66,463.70, 91,719.54 and 36,248.45 is: 50,022.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,463.70 : 91,719.54 = 36,248.45 : x
  2. Step 2: Convert to fraction form
    66,463.70/91,719.54 = 36,248.45/x
  3. Step 3: Cross multiply
    66,463.70x = 91,719.54 × 36,248.45
  4. Step 4: Simplify right side
    66,463.70x = 3,324,690,701.12
  5. Step 5: Solve for x
    x = 3,324,690,701.12/66,463.70
  6. Step 6: Final answer
    x = 50,022.66

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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.