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Finding the Fourth Proportional to 18,483.29, 25,504.97 and 10,929.90

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Solution

The fourth proportional to 18,483.29, 25,504.97 and 10,929.90 is: 15,082.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,483.29 : 25,504.97 = 10,929.90 : x
  2. Step 2: Convert to fraction form
    18,483.29/25,504.97 = 10,929.90/x
  3. Step 3: Cross multiply
    18,483.29x = 25,504.97 × 10,929.90
  4. Step 4: Simplify right side
    18,483.29x = 278,766,716.95
  5. Step 5: Solve for x
    x = 278,766,716.95/18,483.29
  6. Step 6: Final answer
    x = 15,082.10

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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.