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Finding the Fourth Proportional to 111,651.77, 154,070.49 and 63,894.17

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Solution

The fourth proportional to 111,651.77, 154,070.49 and 63,894.17 is: 88,168.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,651.77 : 154,070.49 = 63,894.17 : x
  2. Step 2: Convert to fraction form
    111,651.77/154,070.49 = 63,894.17/x
  3. Step 3: Cross multiply
    111,651.77x = 154,070.49 × 63,894.17
  4. Step 4: Simplify right side
    111,651.77x = 9,844,206,080.04
  5. Step 5: Solve for x
    x = 9,844,206,080.04/111,651.77
  6. Step 6: Final answer
    x = 88,168.83

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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.