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Finding the Fourth Proportional to 178,690.56, 246,581.77 and 98,117.70

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Solution

The fourth proportional to 178,690.56, 246,581.77 and 98,117.70 is: 135,396.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,690.56 : 246,581.77 = 98,117.70 : x
  2. Step 2: Convert to fraction form
    178,690.56/246,581.77 = 98,117.70/x
  3. Step 3: Cross multiply
    178,690.56x = 246,581.77 × 98,117.70
  4. Step 4: Simplify right side
    178,690.56x = 24,194,036,134.33
  5. Step 5: Solve for x
    x = 24,194,036,134.33/178,690.56
  6. Step 6: Final answer
    x = 135,396.27

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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.