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Finding the Fourth Proportional to 188,643.44, 260,332.20 and 103,765.04

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Solution

The fourth proportional to 188,643.44, 260,332.20 and 103,765.04 is: 143,198.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,643.44 : 260,332.20 = 103,765.04 : x
  2. Step 2: Convert to fraction form
    188,643.44/260,332.20 = 103,765.04/x
  3. Step 3: Cross multiply
    188,643.44x = 260,332.20 × 103,765.04
  4. Step 4: Simplify right side
    188,643.44x = 27,013,381,146.29
  5. Step 5: Solve for x
    x = 27,013,381,146.29/188,643.44
  6. Step 6: Final answer
    x = 143,198.09

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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.