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Finding the Fourth Proportional to 83,127.80, 124,806.90 and 65,617.40

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Solution

The fourth proportional to 83,127.80, 124,806.90 and 65,617.40 is: 98,517.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,127.80 : 124,806.90 = 65,617.40 : x
  2. Step 2: Convert to fraction form
    83,127.80/124,806.90 = 65,617.40/x
  3. Step 3: Cross multiply
    83,127.80x = 124,806.90 × 65,617.40
  4. Step 4: Simplify right side
    83,127.80x = 8,189,504,280.06
  5. Step 5: Solve for x
    x = 8,189,504,280.06/83,127.80
  6. Step 6: Final answer
    x = 98,517.03

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1.5x scale

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.