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Finding the Fourth Proportional to 18,410.99, 25,405.03 and 10,343.53

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Solution

The fourth proportional to 18,410.99, 25,405.03 and 10,343.53 is: 14,272.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,410.99 : 25,405.03 = 10,343.53 : x
  2. Step 2: Convert to fraction form
    18,410.99/25,405.03 = 10,343.53/x
  3. Step 3: Cross multiply
    18,410.99x = 25,405.03 × 10,343.53
  4. Step 4: Simplify right side
    18,410.99x = 262,777,689.96
  5. Step 5: Solve for x
    x = 262,777,689.96/18,410.99
  6. Step 6: Final answer
    x = 14,272.87

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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.