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Finding the Fourth Proportional to 98,956.62, 136,540.89 and 80,060.94

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Solution

The fourth proportional to 98,956.62, 136,540.89 and 80,060.94 is: 110,468.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,956.62 : 136,540.89 = 80,060.94 : x
  2. Step 2: Convert to fraction form
    98,956.62/136,540.89 = 80,060.94/x
  3. Step 3: Cross multiply
    98,956.62x = 136,540.89 × 80,060.94
  4. Step 4: Simplify right side
    98,956.62x = 10,931,592,001.84
  5. Step 5: Solve for x
    x = 10,931,592,001.84/98,956.62
  6. Step 6: Final answer
    x = 110,468.53

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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.