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Finding the Fourth Proportional to 111,716.10, 167,479.74 and 48,488.40

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Solution

The fourth proportional to 111,716.10, 167,479.74 and 48,488.40 is: 72,691.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,716.10 : 167,479.74 = 48,488.40 : x
  2. Step 2: Convert to fraction form
    111,716.10/167,479.74 = 48,488.40/x
  3. Step 3: Cross multiply
    111,716.10x = 167,479.74 × 48,488.40
  4. Step 4: Simplify right side
    111,716.10x = 8,120,824,625.02
  5. Step 5: Solve for x
    x = 8,120,824,625.02/111,716.10
  6. Step 6: Final answer
    x = 72,691.62

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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.