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Finding the Fourth Proportional to 45,550.74, 68,230.10 and 28,902

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Solution

The fourth proportional to 45,550.74, 68,230.10 and 28,902 is: 43,292.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,550.74 : 68,230.10 = 28,902 : x
  2. Step 2: Convert to fraction form
    45,550.74/68,230.10 = 28,902/x
  3. Step 3: Cross multiply
    45,550.74x = 68,230.10 × 28,902
  4. Step 4: Simplify right side
    45,550.74x = 1,971,986,350.20
  5. Step 5: Solve for x
    x = 1,971,986,350.20/45,550.74
  6. Step 6: Final answer
    x = 43,292.08

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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.