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Finding the Fourth Proportional to 125,879.22, 173,716.15 and 71,434.97

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Solution

The fourth proportional to 125,879.22, 173,716.15 and 71,434.97 is: 98,581.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,879.22 : 173,716.15 = 71,434.97 : x
  2. Step 2: Convert to fraction form
    125,879.22/173,716.15 = 71,434.97/x
  3. Step 3: Cross multiply
    125,879.22x = 173,716.15 × 71,434.97
  4. Step 4: Simplify right side
    125,879.22x = 12,409,407,273.77
  5. Step 5: Solve for x
    x = 12,409,407,273.77/125,879.22
  6. Step 6: Final answer
    x = 98,581.86

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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.