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Finding the Fourth Proportional to 172,809.44, 258,839.08 and 83,876.04

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Solution

The fourth proportional to 172,809.44, 258,839.08 and 83,876.04 is: 125,632.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,809.44 : 258,839.08 = 83,876.04 : x
  2. Step 2: Convert to fraction form
    172,809.44/258,839.08 = 83,876.04/x
  3. Step 3: Cross multiply
    172,809.44x = 258,839.08 × 83,876.04
  4. Step 4: Simplify right side
    172,809.44x = 21,710,397,027.64
  5. Step 5: Solve for x
    x = 21,710,397,027.64/172,809.44
  6. Step 6: Final answer
    x = 125,632.01

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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.