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Finding the Fourth Proportional to 64,020.87, 88,351.02 and 35,731.89

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Solution

The fourth proportional to 64,020.87, 88,351.02 and 35,731.89 is: 49,311.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,020.87 : 88,351.02 = 35,731.89 : x
  2. Step 2: Convert to fraction form
    64,020.87/88,351.02 = 35,731.89/x
  3. Step 3: Cross multiply
    64,020.87x = 88,351.02 × 35,731.89
  4. Step 4: Simplify right side
    64,020.87x = 3,156,948,928.03
  5. Step 5: Solve for x
    x = 3,156,948,928.03/64,020.87
  6. Step 6: Final answer
    x = 49,311.25

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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.