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Finding the Fourth Proportional to 18,805.98, 25,950.86 and 10,306.74

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Solution

The fourth proportional to 18,805.98, 25,950.86 and 10,306.74 is: 14,222.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,805.98 : 25,950.86 = 10,306.74 : x
  2. Step 2: Convert to fraction form
    18,805.98/25,950.86 = 10,306.74/x
  3. Step 3: Cross multiply
    18,805.98x = 25,950.86 × 10,306.74
  4. Step 4: Simplify right side
    18,805.98x = 267,468,715.26
  5. Step 5: Solve for x
    x = 267,468,715.26/18,805.98
  6. Step 6: Final answer
    x = 14,222.54

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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.