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Finding the Fourth Proportional to 25,221.64, 37,839.78 and 9,640.52

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Solution

The fourth proportional to 25,221.64, 37,839.78 and 9,640.52 is: 14,463.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,221.64 : 37,839.78 = 9,640.52 : x
  2. Step 2: Convert to fraction form
    25,221.64/37,839.78 = 9,640.52/x
  3. Step 3: Cross multiply
    25,221.64x = 37,839.78 × 9,640.52
  4. Step 4: Simplify right side
    25,221.64x = 364,795,155.89
  5. Step 5: Solve for x
    x = 364,795,155.89/25,221.64
  6. Step 6: Final answer
    x = 14,463.58

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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.