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Finding the Fourth Proportional to 18,658.63, 25,747.47 and 10,591.33

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Solution

The fourth proportional to 18,658.63, 25,747.47 and 10,591.33 is: 14,615.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,658.63 : 25,747.47 = 10,591.33 : x
  2. Step 2: Convert to fraction form
    18,658.63/25,747.47 = 10,591.33/x
  3. Step 3: Cross multiply
    18,658.63x = 25,747.47 × 10,591.33
  4. Step 4: Simplify right side
    18,658.63x = 272,699,951.44
  5. Step 5: Solve for x
    x = 272,699,951.44/18,658.63
  6. Step 6: Final answer
    x = 14,615.22

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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.