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Finding the Fourth Proportional to 25,809.65, 35,621.46 and 15,199.28

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Solution

The fourth proportional to 25,809.65, 35,621.46 and 15,199.28 is: 20,977.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,809.65 : 35,621.46 = 15,199.28 : x
  2. Step 2: Convert to fraction form
    25,809.65/35,621.46 = 15,199.28/x
  3. Step 3: Cross multiply
    25,809.65x = 35,621.46 × 15,199.28
  4. Step 4: Simplify right side
    25,809.65x = 541,420,544.55
  5. Step 5: Solve for x
    x = 541,420,544.55/25,809.65
  6. Step 6: Final answer
    x = 20,977.45

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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.