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Finding the Fourth Proportional to 136,269.90, 188,057.88 and 75,843.09

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Solution

The fourth proportional to 136,269.90, 188,057.88 and 75,843.09 is: 104,666.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,269.90 : 188,057.88 = 75,843.09 : x
  2. Step 2: Convert to fraction form
    136,269.90/188,057.88 = 75,843.09/x
  3. Step 3: Cross multiply
    136,269.90x = 188,057.88 × 75,843.09
  4. Step 4: Simplify right side
    136,269.90x = 14,262,890,718.05
  5. Step 5: Solve for x
    x = 14,262,890,718.05/136,269.90
  6. Step 6: Final answer
    x = 104,666.48

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1.5x scale

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.