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Finding the Fourth Proportional to 17,074.90, 25,628.55 and 10,513.90

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Solution

The fourth proportional to 17,074.90, 25,628.55 and 10,513.90 is: 15,780.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,074.90 : 25,628.55 = 10,513.90 : x
  2. Step 2: Convert to fraction form
    17,074.90/25,628.55 = 10,513.90/x
  3. Step 3: Cross multiply
    17,074.90x = 25,628.55 × 10,513.90
  4. Step 4: Simplify right side
    17,074.90x = 269,456,011.85
  5. Step 5: Solve for x
    x = 269,456,011.85/17,074.90
  6. Step 6: Final answer
    x = 15,780.83

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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.