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Finding the Fourth Proportional to 108,876.96, 150,245.28 and 65,856.24

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Solution

The fourth proportional to 108,876.96, 150,245.28 and 65,856.24 is: 90,878.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,876.96 : 150,245.28 = 65,856.24 : x
  2. Step 2: Convert to fraction form
    108,876.96/150,245.28 = 65,856.24/x
  3. Step 3: Cross multiply
    108,876.96x = 150,245.28 × 65,856.24
  4. Step 4: Simplify right side
    108,876.96x = 9,894,589,218.55
  5. Step 5: Solve for x
    x = 9,894,589,218.55/108,876.96
  6. Step 6: Final answer
    x = 90,878.63

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1.5x scale

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.