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Finding the Fourth Proportional to 18,658.48, 25,749.12 and 10,275.04

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Solution

The fourth proportional to 18,658.48, 25,749.12 and 10,275.04 is: 14,179.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,658.48 : 25,749.12 = 10,275.04 : x
  2. Step 2: Convert to fraction form
    18,658.48/25,749.12 = 10,275.04/x
  3. Step 3: Cross multiply
    18,658.48x = 25,749.12 × 10,275.04
  4. Step 4: Simplify right side
    18,658.48x = 264,573,237.96
  5. Step 5: Solve for x
    x = 264,573,237.96/18,658.48
  6. Step 6: Final answer
    x = 14,179.79

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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.