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Finding the Fourth Proportional to 178,999.84, 247,020.67 and 98,432.56

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Solution

The fourth proportional to 178,999.84, 247,020.67 and 98,432.56 is: 135,837.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,999.84 : 247,020.67 = 98,432.56 : x
  2. Step 2: Convert to fraction form
    178,999.84/247,020.67 = 98,432.56/x
  3. Step 3: Cross multiply
    178,999.84x = 247,020.67 × 98,432.56
  4. Step 4: Simplify right side
    178,999.84x = 24,314,876,921.02
  5. Step 5: Solve for x
    x = 24,314,876,921.02/178,999.84
  6. Step 6: Final answer
    x = 135,837.42

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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.