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Finding the Fourth Proportional to 17,065.20, 25,619.40 and 15,902.40

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Solution

The fourth proportional to 17,065.20, 25,619.40 and 15,902.40 is: 23,873.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,065.20 : 25,619.40 = 15,902.40 : x
  2. Step 2: Convert to fraction form
    17,065.20/25,619.40 = 15,902.40/x
  3. Step 3: Cross multiply
    17,065.20x = 25,619.40 × 15,902.40
  4. Step 4: Simplify right side
    17,065.20x = 407,409,946.56
  5. Step 5: Solve for x
    x = 407,409,946.56/17,065.20
  6. Step 6: Final answer
    x = 23,873.73

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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.