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Finding the Fourth Proportional to 28,449.55, 39,260.35 and 15,874.30

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Solution

The fourth proportional to 28,449.55, 39,260.35 and 15,874.30 is: 21,906.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,449.55 : 39,260.35 = 15,874.30 : x
  2. Step 2: Convert to fraction form
    28,449.55/39,260.35 = 15,874.30/x
  3. Step 3: Cross multiply
    28,449.55x = 39,260.35 × 15,874.30
  4. Step 4: Simplify right side
    28,449.55x = 623,230,574.01
  5. Step 5: Solve for x
    x = 623,230,574.01/28,449.55
  6. Step 6: Final answer
    x = 21,906.52

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.