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Finding the Fourth Proportional to 108,613.92, 149,879.60 and 60,215.40

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Solution

The fourth proportional to 108,613.92, 149,879.60 and 60,215.40 is: 83,093.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,613.92 : 149,879.60 = 60,215.40 : x
  2. Step 2: Convert to fraction form
    108,613.92/149,879.60 = 60,215.40/x
  3. Step 3: Cross multiply
    108,613.92x = 149,879.60 × 60,215.40
  4. Step 4: Simplify right side
    108,613.92x = 9,025,060,065.84
  5. Step 5: Solve for x
    x = 9,025,060,065.84/108,613.92
  6. Step 6: Final answer
    x = 83,093.03

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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.