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Finding the Fourth Proportional to 125,873.22, 173,706.21 and 69,285

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Solution

The fourth proportional to 125,873.22, 173,706.21 and 69,285 is: 95,613.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,873.22 : 173,706.21 = 69,285 : x
  2. Step 2: Convert to fraction form
    125,873.22/173,706.21 = 69,285/x
  3. Step 3: Cross multiply
    125,873.22x = 173,706.21 × 69,285
  4. Step 4: Simplify right side
    125,873.22x = 12,035,234,759.85
  5. Step 5: Solve for x
    x = 12,035,234,759.85/125,873.22
  6. Step 6: Final answer
    x = 95,613.94

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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.