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Finding the Fourth Proportional to 178,999.79, 247,013.07 and 98,422.52

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Solution

The fourth proportional to 178,999.79, 247,013.07 and 98,422.52 is: 135,819.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,999.79 : 247,013.07 = 98,422.52 : x
  2. Step 2: Convert to fraction form
    178,999.79/247,013.07 = 98,422.52/x
  3. Step 3: Cross multiply
    178,999.79x = 247,013.07 × 98,422.52
  4. Step 4: Simplify right side
    178,999.79x = 24,311,648,822.34
  5. Step 5: Solve for x
    x = 24,311,648,822.34/178,999.79
  6. Step 6: Final answer
    x = 135,819.43

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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.