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Finding the Fourth Proportional to 12,725.85, 17,561.63 and 7,061.46

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Solution

The fourth proportional to 12,725.85, 17,561.63 and 7,061.46 is: 9,744.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,725.85 : 17,561.63 = 7,061.46 : x
  2. Step 2: Convert to fraction form
    12,725.85/17,561.63 = 7,061.46/x
  3. Step 3: Cross multiply
    12,725.85x = 17,561.63 × 7,061.46
  4. Step 4: Simplify right side
    12,725.85x = 124,010,747.78
  5. Step 5: Solve for x
    x = 124,010,747.78/12,725.85
  6. Step 6: Final answer
    x = 9,744.79

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.