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Finding the Fourth Proportional to 18,610.67, 25,687.14 and 10,657.46

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Solution

The fourth proportional to 18,610.67, 25,687.14 and 10,657.46 is: 14,709.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,610.67 : 25,687.14 = 10,657.46 : x
  2. Step 2: Convert to fraction form
    18,610.67/25,687.14 = 10,657.46/x
  3. Step 3: Cross multiply
    18,610.67x = 25,687.14 × 10,657.46
  4. Step 4: Simplify right side
    18,610.67x = 273,759,667.06
  5. Step 5: Solve for x
    x = 273,759,667.06/18,610.67
  6. Step 6: Final answer
    x = 14,709.82

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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.