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Finding the Fourth Proportional to 172,974.16, 238,704.20 and 93,486.16

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Solution

The fourth proportional to 172,974.16, 238,704.20 and 93,486.16 is: 129,010.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,974.16 : 238,704.20 = 93,486.16 : x
  2. Step 2: Convert to fraction form
    172,974.16/238,704.20 = 93,486.16/x
  3. Step 3: Cross multiply
    172,974.16x = 238,704.20 × 93,486.16
  4. Step 4: Simplify right side
    172,974.16x = 22,315,539,033.87
  5. Step 5: Solve for x
    x = 22,315,539,033.87/172,974.16
  6. Step 6: Final answer
    x = 129,010.82

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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.