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Finding the Fourth Proportional to 80,798.60, 111,506.66 and 48,543.08

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Solution

The fourth proportional to 80,798.60, 111,506.66 and 48,543.08 is: 66,992.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,798.60 : 111,506.66 = 48,543.08 : x
  2. Step 2: Convert to fraction form
    80,798.60/111,506.66 = 48,543.08/x
  3. Step 3: Cross multiply
    80,798.60x = 111,506.66 × 48,543.08
  4. Step 4: Simplify right side
    80,798.60x = 5,412,876,716.91
  5. Step 5: Solve for x
    x = 5,412,876,716.91/80,798.60
  6. Step 6: Final answer
    x = 66,992.21

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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.