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Finding the Fourth Proportional to 52,987.24, 79,406.92 and 39,824.20

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Solution

The fourth proportional to 52,987.24, 79,406.92 and 39,824.20 is: 59,680.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,987.24 : 79,406.92 = 39,824.20 : x
  2. Step 2: Convert to fraction form
    52,987.24/79,406.92 = 39,824.20/x
  3. Step 3: Cross multiply
    52,987.24x = 79,406.92 × 39,824.20
  4. Step 4: Simplify right side
    52,987.24x = 3,162,317,063.46
  5. Step 5: Solve for x
    x = 3,162,317,063.46/52,987.24
  6. Step 6: Final answer
    x = 59,680.73

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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.