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Finding the Fourth Proportional to 22,748.51, 34,122.87 and 12,425.87

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Solution

The fourth proportional to 22,748.51, 34,122.87 and 12,425.87 is: 18,638.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,748.51 : 34,122.87 = 12,425.87 : x
  2. Step 2: Convert to fraction form
    22,748.51/34,122.87 = 12,425.87/x
  3. Step 3: Cross multiply
    22,748.51x = 34,122.87 × 12,425.87
  4. Step 4: Simplify right side
    22,748.51x = 424,006,431.95
  5. Step 5: Solve for x
    x = 424,006,431.95/22,748.51
  6. Step 6: Final answer
    x = 18,638.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.