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Finding the Fourth Proportional to 38,551.68, 57,788.13 and 21,876.50

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Solution

The fourth proportional to 38,551.68, 57,788.13 and 21,876.50 is: 32,792.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,551.68 : 57,788.13 = 21,876.50 : x
  2. Step 2: Convert to fraction form
    38,551.68/57,788.13 = 21,876.50/x
  3. Step 3: Cross multiply
    38,551.68x = 57,788.13 × 21,876.50
  4. Step 4: Simplify right side
    38,551.68x = 1,264,201,737.00
  5. Step 5: Solve for x
    x = 1,264,201,737.00/38,551.68
  6. Step 6: Final answer
    x = 32,792.39

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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.