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Finding the Fourth Proportional to 18,603.13, 28,028.80 and 16,826.23

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Solution

The fourth proportional to 18,603.13, 28,028.80 and 16,826.23 is: 25,351.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.13 : 28,028.80 = 16,826.23 : x
  2. Step 2: Convert to fraction form
    18,603.13/28,028.80 = 16,826.23/x
  3. Step 3: Cross multiply
    18,603.13x = 28,028.80 × 16,826.23
  4. Step 4: Simplify right side
    18,603.13x = 471,619,028.39
  5. Step 5: Solve for x
    x = 471,619,028.39/18,603.13
  6. Step 6: Final answer
    x = 25,351.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.