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Finding the Fourth Proportional to 28,610.62, 42,906.21 and 14,565.22

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Solution

The fourth proportional to 28,610.62, 42,906.21 and 14,565.22 is: 21,842.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,610.62 : 42,906.21 = 14,565.22 : x
  2. Step 2: Convert to fraction form
    28,610.62/42,906.21 = 14,565.22/x
  3. Step 3: Cross multiply
    28,610.62x = 42,906.21 × 14,565.22
  4. Step 4: Simplify right side
    28,610.62x = 624,938,388.02
  5. Step 5: Solve for x
    x = 624,938,388.02/28,610.62
  6. Step 6: Final answer
    x = 21,842.88

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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.