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Finding the Fourth Proportional to 18,468.93, 25,487.13 and 10,085.43

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Solution

The fourth proportional to 18,468.93, 25,487.13 and 10,085.43 is: 13,917.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,468.93 : 25,487.13 = 10,085.43 : x
  2. Step 2: Convert to fraction form
    18,468.93/25,487.13 = 10,085.43/x
  3. Step 3: Cross multiply
    18,468.93x = 25,487.13 × 10,085.43
  4. Step 4: Simplify right side
    18,468.93x = 257,048,665.52
  5. Step 5: Solve for x
    x = 257,048,665.52/18,468.93
  6. Step 6: Final answer
    x = 13,917.90

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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.