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Finding the Fourth Proportional to 172,881, 238,575.78 and 93,393

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Solution

The fourth proportional to 172,881, 238,575.78 and 93,393 is: 128,882.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,881 : 238,575.78 = 93,393 : x
  2. Step 2: Convert to fraction form
    172,881/238,575.78 = 93,393/x
  3. Step 3: Cross multiply
    172,881x = 238,575.78 × 93,393
  4. Step 4: Simplify right side
    172,881x = 22,281,307,821.54
  5. Step 5: Solve for x
    x = 22,281,307,821.54/172,881
  6. Step 6: Final answer
    x = 128,882.34

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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.