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Finding the Fourth Proportional to 125,657.80, 188,519.51 and 65,690.26

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Solution

The fourth proportional to 125,657.80, 188,519.51 and 65,690.26 is: 98,552.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,657.80 : 188,519.51 = 65,690.26 : x
  2. Step 2: Convert to fraction form
    125,657.80/188,519.51 = 65,690.26/x
  3. Step 3: Cross multiply
    125,657.80x = 188,519.51 × 65,690.26
  4. Step 4: Simplify right side
    125,657.80x = 12,383,895,626.97
  5. Step 5: Solve for x
    x = 12,383,895,626.97/125,657.80
  6. Step 6: Final answer
    x = 98,552.54

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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.