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Finding the Fourth Proportional to 12,715.74, 19,073.58 and 3,481.74

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Solution

The fourth proportional to 12,715.74, 19,073.58 and 3,481.74 is: 5,222.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,715.74 : 19,073.58 = 3,481.74 : x
  2. Step 2: Convert to fraction form
    12,715.74/19,073.58 = 3,481.74/x
  3. Step 3: Cross multiply
    12,715.74x = 19,073.58 × 3,481.74
  4. Step 4: Simplify right side
    12,715.74x = 66,409,246.43
  5. Step 5: Solve for x
    x = 66,409,246.43/12,715.74
  6. Step 6: Final answer
    x = 5,222.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.