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Finding the Fourth Proportional to 83,019.80, 124,529.70 and 23,857.40

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Solution

The fourth proportional to 83,019.80, 124,529.70 and 23,857.40 is: 35,786.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,019.80 : 124,529.70 = 23,857.40 : x
  2. Step 2: Convert to fraction form
    83,019.80/124,529.70 = 23,857.40/x
  3. Step 3: Cross multiply
    83,019.80x = 124,529.70 × 23,857.40
  4. Step 4: Simplify right side
    83,019.80x = 2,970,954,864.78
  5. Step 5: Solve for x
    x = 2,970,954,864.78/83,019.80
  6. Step 6: Final answer
    x = 35,786.10

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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.