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Finding the Fourth Proportional to 83,191.40, 124,865.40 and 43,776.80

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Solution

The fourth proportional to 83,191.40, 124,865.40 and 43,776.80 is: 65,706.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,191.40 : 124,865.40 = 43,776.80 : x
  2. Step 2: Convert to fraction form
    83,191.40/124,865.40 = 43,776.80/x
  3. Step 3: Cross multiply
    83,191.40x = 124,865.40 × 43,776.80
  4. Step 4: Simplify right side
    83,191.40x = 5,466,207,642.72
  5. Step 5: Solve for x
    x = 5,466,207,642.72/83,191.40
  6. Step 6: Final answer
    x = 65,706.40

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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.