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Finding the Fourth Proportional to 18,545.63, 27,821.93 and 7,453.17

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Solution

The fourth proportional to 18,545.63, 27,821.93 and 7,453.17 is: 11,181.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,545.63 : 27,821.93 = 7,453.17 : x
  2. Step 2: Convert to fraction form
    18,545.63/27,821.93 = 7,453.17/x
  3. Step 3: Cross multiply
    18,545.63x = 27,821.93 × 7,453.17
  4. Step 4: Simplify right side
    18,545.63x = 207,361,536.75
  5. Step 5: Solve for x
    x = 207,361,536.75/18,545.63
  6. Step 6: Final answer
    x = 11,181.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.