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Finding the Fourth Proportional to 178,049.50, 245,708.32 and 98,561.50

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Solution

The fourth proportional to 178,049.50, 245,708.32 and 98,561.50 is: 136,014.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,049.50 : 245,708.32 = 98,561.50 : x
  2. Step 2: Convert to fraction form
    178,049.50/245,708.32 = 98,561.50/x
  3. Step 3: Cross multiply
    178,049.50x = 245,708.32 × 98,561.50
  4. Step 4: Simplify right side
    178,049.50x = 24,217,380,581.68
  5. Step 5: Solve for x
    x = 24,217,380,581.68/178,049.50
  6. Step 6: Final answer
    x = 136,014.88

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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.