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Finding the Fourth Proportional to 71,099.86, 98,117.22 and 39,268.48

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Solution

The fourth proportional to 71,099.86, 98,117.22 and 39,268.48 is: 54,190.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,099.86 : 98,117.22 = 39,268.48 : x
  2. Step 2: Convert to fraction form
    71,099.86/98,117.22 = 39,268.48/x
  3. Step 3: Cross multiply
    71,099.86x = 98,117.22 × 39,268.48
  4. Step 4: Simplify right side
    71,099.86x = 3,852,914,091.23
  5. Step 5: Solve for x
    x = 3,852,914,091.23/71,099.86
  6. Step 6: Final answer
    x = 54,190.18

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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.