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Finding the Fourth Proportional to 60,731.70, 91,065.15 and 25,631.70

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Solution

The fourth proportional to 60,731.70, 91,065.15 and 25,631.70 is: 38,433.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,731.70 : 91,065.15 = 25,631.70 : x
  2. Step 2: Convert to fraction form
    60,731.70/91,065.15 = 25,631.70/x
  3. Step 3: Cross multiply
    60,731.70x = 91,065.15 × 25,631.70
  4. Step 4: Simplify right side
    60,731.70x = 2,334,154,605.26
  5. Step 5: Solve for x
    x = 2,334,154,605.26/60,731.70
  6. Step 6: Final answer
    x = 38,433.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.