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Finding the Fourth Proportional to 15,759.96, 21,747.96 and 10,170.96

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Solution

The fourth proportional to 15,759.96, 21,747.96 and 10,170.96 is: 14,035.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,759.96 : 21,747.96 = 10,170.96 : x
  2. Step 2: Convert to fraction form
    15,759.96/21,747.96 = 10,170.96/x
  3. Step 3: Cross multiply
    15,759.96x = 21,747.96 × 10,170.96
  4. Step 4: Simplify right side
    15,759.96x = 221,197,631.24
  5. Step 5: Solve for x
    x = 221,197,631.24/15,759.96
  6. Step 6: Final answer
    x = 14,035.42

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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.