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Finding the Fourth Proportional to 18,211.80, 25,113.66 and 17,804.46

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Solution

The fourth proportional to 18,211.80, 25,113.66 and 17,804.46 is: 24,551.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,211.80 : 25,113.66 = 17,804.46 : x
  2. Step 2: Convert to fraction form
    18,211.80/25,113.66 = 17,804.46/x
  3. Step 3: Cross multiply
    18,211.80x = 25,113.66 × 17,804.46
  4. Step 4: Simplify right side
    18,211.80x = 447,135,154.92
  5. Step 5: Solve for x
    x = 447,135,154.92/18,211.80
  6. Step 6: Final answer
    x = 24,551.95

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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.