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Finding the Fourth Proportional to 18,750.67, 25,823.42 and 18,342.43

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Solution

The fourth proportional to 18,750.67, 25,823.42 and 18,342.43 is: 25,261.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,750.67 : 25,823.42 = 18,342.43 : x
  2. Step 2: Convert to fraction form
    18,750.67/25,823.42 = 18,342.43/x
  3. Step 3: Cross multiply
    18,750.67x = 25,823.42 × 18,342.43
  4. Step 4: Simplify right side
    18,750.67x = 473,664,182.00
  5. Step 5: Solve for x
    x = 473,664,182.00/18,750.67
  6. Step 6: Final answer
    x = 25,261.19

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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.