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Finding the Fourth Proportional to 19,963.91, 29,937.09 and 7,475.17

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Solution

The fourth proportional to 19,963.91, 29,937.09 and 7,475.17 is: 11,209.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,963.91 : 29,937.09 = 7,475.17 : x
  2. Step 2: Convert to fraction form
    19,963.91/29,937.09 = 7,475.17/x
  3. Step 3: Cross multiply
    19,963.91x = 29,937.09 × 7,475.17
  4. Step 4: Simplify right side
    19,963.91x = 223,784,954.18
  5. Step 5: Solve for x
    x = 223,784,954.18/19,963.91
  6. Step 6: Final answer
    x = 11,209.48

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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.