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Finding the Fourth Proportional to 18,804.65, 25,943.54 and 11,251.19

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Solution

The fourth proportional to 18,804.65, 25,943.54 and 11,251.19 is: 15,522.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,804.65 : 25,943.54 = 11,251.19 : x
  2. Step 2: Convert to fraction form
    18,804.65/25,943.54 = 11,251.19/x
  3. Step 3: Cross multiply
    18,804.65x = 25,943.54 × 11,251.19
  4. Step 4: Simplify right side
    18,804.65x = 291,895,511.84
  5. Step 5: Solve for x
    x = 291,895,511.84/18,804.65
  6. Step 6: Final answer
    x = 15,522.52

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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.