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Finding the Fourth Proportional to 30,347.11, 41,879.19 and 16,919.20

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Solution

The fourth proportional to 30,347.11, 41,879.19 and 16,919.20 is: 23,348.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,347.11 : 41,879.19 = 16,919.20 : x
  2. Step 2: Convert to fraction form
    30,347.11/41,879.19 = 16,919.20/x
  3. Step 3: Cross multiply
    30,347.11x = 41,879.19 × 16,919.20
  4. Step 4: Simplify right side
    30,347.11x = 708,562,391.45
  5. Step 5: Solve for x
    x = 708,562,391.45/30,347.11
  6. Step 6: Final answer
    x = 23,348.60

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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.