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Finding the Fourth Proportional to 86,711.39, 119,626.30 and 68,734.25

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Solution

The fourth proportional to 86,711.39, 119,626.30 and 68,734.25 is: 94,825.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,711.39 : 119,626.30 = 68,734.25 : x
  2. Step 2: Convert to fraction form
    86,711.39/119,626.30 = 68,734.25/x
  3. Step 3: Cross multiply
    86,711.39x = 119,626.30 × 68,734.25
  4. Step 4: Simplify right side
    86,711.39x = 8,222,424,010.78
  5. Step 5: Solve for x
    x = 8,222,424,010.78/86,711.39
  6. Step 6: Final answer
    x = 94,825.19

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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.