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Finding the Fourth Proportional to 18,803.74, 25,948.60 and 10,305.67

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Solution

The fourth proportional to 18,803.74, 25,948.60 and 10,305.67 is: 14,221.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,803.74 : 25,948.60 = 10,305.67 : x
  2. Step 2: Convert to fraction form
    18,803.74/25,948.60 = 10,305.67/x
  3. Step 3: Cross multiply
    18,803.74x = 25,948.60 × 10,305.67
  4. Step 4: Simplify right side
    18,803.74x = 267,417,797.53
  5. Step 5: Solve for x
    x = 267,417,797.53/18,803.74
  6. Step 6: Final answer
    x = 14,221.52

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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.