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Finding the Fourth Proportional to 18,647.68, 25,727.99 and 10,580

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Solution

The fourth proportional to 18,647.68, 25,727.99 and 10,580 is: 14,597.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,647.68 : 25,727.99 = 10,580 : x
  2. Step 2: Convert to fraction form
    18,647.68/25,727.99 = 10,580/x
  3. Step 3: Cross multiply
    18,647.68x = 25,727.99 × 10,580
  4. Step 4: Simplify right side
    18,647.68x = 272,202,134.20
  5. Step 5: Solve for x
    x = 272,202,134.20/18,647.68
  6. Step 6: Final answer
    x = 14,597.10

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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.