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Finding the Fourth Proportional to 125,656.80, 188,518.01 and 65,689.26

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Solution

The fourth proportional to 125,656.80, 188,518.01 and 65,689.26 is: 98,551.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,656.80 : 188,518.01 = 65,689.26 : x
  2. Step 2: Convert to fraction form
    125,656.80/188,518.01 = 65,689.26/x
  3. Step 3: Cross multiply
    125,656.80x = 188,518.01 × 65,689.26
  4. Step 4: Simplify right side
    125,656.80x = 12,383,608,245.13
  5. Step 5: Solve for x
    x = 12,383,608,245.13/125,656.80
  6. Step 6: Final answer
    x = 98,551.04

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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.