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Finding the Fourth Proportional to 18,641.09, 25,724.66 and 10,257.59

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Solution

The fourth proportional to 18,641.09, 25,724.66 and 10,257.59 is: 14,155.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,641.09 : 25,724.66 = 10,257.59 : x
  2. Step 2: Convert to fraction form
    18,641.09/25,724.66 = 10,257.59/x
  3. Step 3: Cross multiply
    18,641.09x = 25,724.66 × 10,257.59
  4. Step 4: Simplify right side
    18,641.09x = 263,872,835.26
  5. Step 5: Solve for x
    x = 263,872,835.26/18,641.09
  6. Step 6: Final answer
    x = 14,155.44

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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.