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Finding the Fourth Proportional to 18,473.69, 25,492.63 and 10,920.71

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Solution

The fourth proportional to 18,473.69, 25,492.63 and 10,920.71 is: 15,069.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,473.69 : 25,492.63 = 10,920.71 : x
  2. Step 2: Convert to fraction form
    18,473.69/25,492.63 = 10,920.71/x
  3. Step 3: Cross multiply
    18,473.69x = 25,492.63 × 10,920.71
  4. Step 4: Simplify right side
    18,473.69x = 278,397,619.37
  5. Step 5: Solve for x
    x = 278,397,619.37/18,473.69
  6. Step 6: Final answer
    x = 15,069.95

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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.