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Finding the Fourth Proportional to 48,894.66, 67,451.81 and 28,751.18

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Solution

The fourth proportional to 48,894.66, 67,451.81 and 28,751.18 is: 39,663.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,894.66 : 67,451.81 = 28,751.18 : x
  2. Step 2: Convert to fraction form
    48,894.66/67,451.81 = 28,751.18/x
  3. Step 3: Cross multiply
    48,894.66x = 67,451.81 × 28,751.18
  4. Step 4: Simplify right side
    48,894.66x = 1,939,318,649.62
  5. Step 5: Solve for x
    x = 1,939,318,649.62/48,894.66
  6. Step 6: Final answer
    x = 39,663.20

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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.