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Finding the Fourth Proportional to 48,690.66, 72,843.82 and 36,878.46

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Solution

The fourth proportional to 48,690.66, 72,843.82 and 36,878.46 is: 55,172.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,690.66 : 72,843.82 = 36,878.46 : x
  2. Step 2: Convert to fraction form
    48,690.66/72,843.82 = 36,878.46/x
  3. Step 3: Cross multiply
    48,690.66x = 72,843.82 × 36,878.46
  4. Step 4: Simplify right side
    48,690.66x = 2,686,367,902.12
  5. Step 5: Solve for x
    x = 2,686,367,902.12/48,690.66
  6. Step 6: Final answer
    x = 55,172.14

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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.