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Finding the Fourth Proportional to 188,552.78, 260,207.43 and 103,669.85

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Solution

The fourth proportional to 188,552.78, 260,207.43 and 103,669.85 is: 143,066.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,552.78 : 260,207.43 = 103,669.85 : x
  2. Step 2: Convert to fraction form
    188,552.78/260,207.43 = 103,669.85/x
  3. Step 3: Cross multiply
    188,552.78x = 260,207.43 × 103,669.85
  4. Step 4: Simplify right side
    188,552.78x = 26,975,665,236.99
  5. Step 5: Solve for x
    x = 26,975,665,236.99/188,552.78
  6. Step 6: Final answer
    x = 143,066.92

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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.