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Finding the Fourth Proportional to 33,418.80, 46,117.80 and 18,311.40

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Solution

The fourth proportional to 33,418.80, 46,117.80 and 18,311.40 is: 25,269.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,418.80 : 46,117.80 = 18,311.40 : x
  2. Step 2: Convert to fraction form
    33,418.80/46,117.80 = 18,311.40/x
  3. Step 3: Cross multiply
    33,418.80x = 46,117.80 × 18,311.40
  4. Step 4: Simplify right side
    33,418.80x = 844,481,482.92
  5. Step 5: Solve for x
    x = 844,481,482.92/33,418.80
  6. Step 6: Final answer
    x = 25,269.65

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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.