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Finding the Fourth Proportional to 32,696.90, 45,114.54 and 20,755.88

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Solution

The fourth proportional to 32,696.90, 45,114.54 and 20,755.88 is: 28,638.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,696.90 : 45,114.54 = 20,755.88 : x
  2. Step 2: Convert to fraction form
    32,696.90/45,114.54 = 20,755.88/x
  3. Step 3: Cross multiply
    32,696.90x = 45,114.54 × 20,755.88
  4. Step 4: Simplify right side
    32,696.90x = 936,391,978.50
  5. Step 5: Solve for x
    x = 936,391,978.50/32,696.90
  6. Step 6: Final answer
    x = 28,638.56

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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.