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Finding the Fourth Proportional to 117,472.65, 162,110.69 and 63,757.20

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Solution

The fourth proportional to 117,472.65, 162,110.69 and 63,757.20 is: 87,984.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,472.65 : 162,110.69 = 63,757.20 : x
  2. Step 2: Convert to fraction form
    117,472.65/162,110.69 = 63,757.20/x
  3. Step 3: Cross multiply
    117,472.65x = 162,110.69 × 63,757.20
  4. Step 4: Simplify right side
    117,472.65x = 10,335,723,936.07
  5. Step 5: Solve for x
    x = 10,335,723,936.07/117,472.65
  6. Step 6: Final answer
    x = 87,984.08

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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.