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Finding the Fourth Proportional to 188,211.01, 282,067.34 and 138,056.28

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Solution

The fourth proportional to 188,211.01, 282,067.34 and 138,056.28 is: 206,901.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,211.01 : 282,067.34 = 138,056.28 : x
  2. Step 2: Convert to fraction form
    188,211.01/282,067.34 = 138,056.28/x
  3. Step 3: Cross multiply
    188,211.01x = 282,067.34 × 138,056.28
  4. Step 4: Simplify right side
    188,211.01x = 38,941,167,669.90
  5. Step 5: Solve for x
    x = 38,941,167,669.90/188,211.01
  6. Step 6: Final answer
    x = 206,901.65

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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.