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Finding the Fourth Proportional to 18,751.17, 25,824.10 and 18,342.93

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Solution

The fourth proportional to 18,751.17, 25,824.10 and 18,342.93 is: 25,261.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,751.17 : 25,824.10 = 18,342.93 : x
  2. Step 2: Convert to fraction form
    18,751.17/25,824.10 = 18,342.93/x
  3. Step 3: Cross multiply
    18,751.17x = 25,824.10 × 18,342.93
  4. Step 4: Simplify right side
    18,751.17x = 473,689,658.61
  5. Step 5: Solve for x
    x = 473,689,658.61/18,751.17
  6. Step 6: Final answer
    x = 25,261.87

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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.