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Finding the Fourth Proportional to 18,658.47, 25,748.67 and 10,274.97

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Solution

The fourth proportional to 18,658.47, 25,748.67 and 10,274.97 is: 14,179.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,658.47 : 25,748.67 = 10,274.97 : x
  2. Step 2: Convert to fraction form
    18,658.47/25,748.67 = 10,274.97/x
  3. Step 3: Cross multiply
    18,658.47x = 25,748.67 × 10,274.97
  4. Step 4: Simplify right side
    18,658.47x = 264,566,811.79
  5. Step 5: Solve for x
    x = 264,566,811.79/18,658.47
  6. Step 6: Final answer
    x = 14,179.45

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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.