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Finding the Fourth Proportional to 18,508.97, 25,525.48 and 15,830.24

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Solution

The fourth proportional to 18,508.97, 25,525.48 and 15,830.24 is: 21,831.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,508.97 : 25,525.48 = 15,830.24 : x
  2. Step 2: Convert to fraction form
    18,508.97/25,525.48 = 15,830.24/x
  3. Step 3: Cross multiply
    18,508.97x = 25,525.48 × 15,830.24
  4. Step 4: Simplify right side
    18,508.97x = 404,074,336.99
  5. Step 5: Solve for x
    x = 404,074,336.99/18,508.97
  6. Step 6: Final answer
    x = 21,831.27

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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.