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Finding the Fourth Proportional to 71,786.03, 99,065.66 and 39,524.40

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Solution

The fourth proportional to 71,786.03, 99,065.66 and 39,524.40 is: 54,544.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,786.03 : 99,065.66 = 39,524.40 : x
  2. Step 2: Convert to fraction form
    71,786.03/99,065.66 = 39,524.40/x
  3. Step 3: Cross multiply
    71,786.03x = 99,065.66 × 39,524.40
  4. Step 4: Simplify right side
    71,786.03x = 3,915,510,772.10
  5. Step 5: Solve for x
    x = 3,915,510,772.10/71,786.03
  6. Step 6: Final answer
    x = 54,544.19

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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.