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Finding the Fourth Proportional to 64,624.42, 96,936.65 and 20,251.17

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Solution

The fourth proportional to 64,624.42, 96,936.65 and 20,251.17 is: 30,376.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,624.42 : 96,936.65 = 20,251.17 : x
  2. Step 2: Convert to fraction form
    64,624.42/96,936.65 = 20,251.17/x
  3. Step 3: Cross multiply
    64,624.42x = 96,936.65 × 20,251.17
  4. Step 4: Simplify right side
    64,624.42x = 1,963,080,578.38
  5. Step 5: Solve for x
    x = 1,963,080,578.38/64,624.42
  6. Step 6: Final answer
    x = 30,376.76

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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.