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Finding the Fourth Proportional to 18,566.19, 25,620.15 and 11,013.21

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Solution

The fourth proportional to 18,566.19, 25,620.15 and 11,013.21 is: 15,197.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,566.19 : 25,620.15 = 11,013.21 : x
  2. Step 2: Convert to fraction form
    18,566.19/25,620.15 = 11,013.21/x
  3. Step 3: Cross multiply
    18,566.19x = 25,620.15 × 11,013.21
  4. Step 4: Simplify right side
    18,566.19x = 282,160,092.18
  5. Step 5: Solve for x
    x = 282,160,092.18/18,566.19
  6. Step 6: Final answer
    x = 15,197.52

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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.