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Finding the Fourth Proportional to 22,418.75, 30,940.04 and 12,482.75

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Solution

The fourth proportional to 22,418.75, 30,940.04 and 12,482.75 is: 17,227.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,418.75 : 30,940.04 = 12,482.75 : x
  2. Step 2: Convert to fraction form
    22,418.75/30,940.04 = 12,482.75/x
  3. Step 3: Cross multiply
    22,418.75x = 30,940.04 × 12,482.75
  4. Step 4: Simplify right side
    22,418.75x = 386,216,721.90
  5. Step 5: Solve for x
    x = 386,216,721.90/22,418.75
  6. Step 6: Final answer
    x = 17,227.40

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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.