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Finding the Fourth Proportional to 25,949.20, 38,866.20 and 10,358.80

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Solution

The fourth proportional to 25,949.20, 38,866.20 and 10,358.80 is: 15,515.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,949.20 : 38,866.20 = 10,358.80 : x
  2. Step 2: Convert to fraction form
    25,949.20/38,866.20 = 10,358.80/x
  3. Step 3: Cross multiply
    25,949.20x = 38,866.20 × 10,358.80
  4. Step 4: Simplify right side
    25,949.20x = 402,607,192.56
  5. Step 5: Solve for x
    x = 402,607,192.56/25,949.20
  6. Step 6: Final answer
    x = 15,515.21

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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.