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Finding the Fourth Proportional to 15,919.76, 23,879.22 and 7,605.66

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Solution

The fourth proportional to 15,919.76, 23,879.22 and 7,605.66 is: 11,408.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,919.76 : 23,879.22 = 7,605.66 : x
  2. Step 2: Convert to fraction form
    15,919.76/23,879.22 = 7,605.66/x
  3. Step 3: Cross multiply
    15,919.76x = 23,879.22 × 7,605.66
  4. Step 4: Simplify right side
    15,919.76x = 181,617,228.39
  5. Step 5: Solve for x
    x = 181,617,228.39/15,919.76
  6. Step 6: Final answer
    x = 11,408.29

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1.5x scale

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.