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Finding the Fourth Proportional to 113,872.17, 170,911.90 and 60,608.86

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Solution

The fourth proportional to 113,872.17, 170,911.90 and 60,608.86 is: 90,968.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,872.17 : 170,911.90 = 60,608.86 : x
  2. Step 2: Convert to fraction form
    113,872.17/170,911.90 = 60,608.86/x
  3. Step 3: Cross multiply
    113,872.17x = 170,911.90 × 60,608.86
  4. Step 4: Simplify right side
    113,872.17x = 10,358,775,116.39
  5. Step 5: Solve for x
    x = 10,358,775,116.39/113,872.17
  6. Step 6: Final answer
    x = 90,968.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.