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Finding the Fourth Proportional to 172,338.17, 237,819.00 and 99,729.43

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Solution

The fourth proportional to 172,338.17, 237,819.00 and 99,729.43 is: 137,622.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,338.17 : 237,819.00 = 99,729.43 : x
  2. Step 2: Convert to fraction form
    172,338.17/237,819.00 = 99,729.43/x
  3. Step 3: Cross multiply
    172,338.17x = 237,819.00 × 99,729.43
  4. Step 4: Simplify right side
    172,338.17x = 23,717,552,251.14
  5. Step 5: Solve for x
    x = 23,717,552,251.14/172,338.17
  6. Step 6: Final answer
    x = 137,622.17

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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.