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Finding the Fourth Proportional to 18,803.53, 25,949.20 and 10,305.08

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Solution

The fourth proportional to 18,803.53, 25,949.20 and 10,305.08 is: 14,221.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,803.53 : 25,949.20 = 10,305.08 : x
  2. Step 2: Convert to fraction form
    18,803.53/25,949.20 = 10,305.08/x
  3. Step 3: Cross multiply
    18,803.53x = 25,949.20 × 10,305.08
  4. Step 4: Simplify right side
    18,803.53x = 267,408,646.81
  5. Step 5: Solve for x
    x = 267,408,646.81/18,803.53
  6. Step 6: Final answer
    x = 14,221.20

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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.