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Finding the Fourth Proportional to 158,493.12, 218,676.96 and 98,034.72

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Solution

The fourth proportional to 158,493.12, 218,676.96 and 98,034.72 is: 135,260.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,493.12 : 218,676.96 = 98,034.72 : x
  2. Step 2: Convert to fraction form
    158,493.12/218,676.96 = 98,034.72/x
  3. Step 3: Cross multiply
    158,493.12x = 218,676.96 × 98,034.72
  4. Step 4: Simplify right side
    158,493.12x = 21,437,934,544.05
  5. Step 5: Solve for x
    x = 21,437,934,544.05/158,493.12
  6. Step 6: Final answer
    x = 135,260.98

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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.