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Finding the Fourth Proportional to 172,807.71, 238,488.47 and 96,351.58

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Solution

The fourth proportional to 172,807.71, 238,488.47 and 96,351.58 is: 132,972.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,807.71 : 238,488.47 = 96,351.58 : x
  2. Step 2: Convert to fraction form
    172,807.71/238,488.47 = 96,351.58/x
  3. Step 3: Cross multiply
    172,807.71x = 238,488.47 × 96,351.58
  4. Step 4: Simplify right side
    172,807.71x = 22,978,740,896.28
  5. Step 5: Solve for x
    x = 22,978,740,896.28/172,807.71
  6. Step 6: Final answer
    x = 132,972.89

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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.