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Finding the Fourth Proportional to 18,999.66, 28,494.53 and 5,669.52

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Solution

The fourth proportional to 18,999.66, 28,494.53 and 5,669.52 is: 8,502.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,999.66 : 28,494.53 = 5,669.52 : x
  2. Step 2: Convert to fraction form
    18,999.66/28,494.53 = 5,669.52/x
  3. Step 3: Cross multiply
    18,999.66x = 28,494.53 × 5,669.52
  4. Step 4: Simplify right side
    18,999.66x = 161,550,279.38
  5. Step 5: Solve for x
    x = 161,550,279.38/18,999.66
  6. Step 6: Final answer
    x = 8,502.80

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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.