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Finding the Fourth Proportional to 13,672.01, 20,509.72 and 5,350.95

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Solution

The fourth proportional to 13,672.01, 20,509.72 and 5,350.95 is: 8,027.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,672.01 : 20,509.72 = 5,350.95 : x
  2. Step 2: Convert to fraction form
    13,672.01/20,509.72 = 5,350.95/x
  3. Step 3: Cross multiply
    13,672.01x = 20,509.72 × 5,350.95
  4. Step 4: Simplify right side
    13,672.01x = 109,746,356.93
  5. Step 5: Solve for x
    x = 109,746,356.93/13,672.01
  6. Step 6: Final answer
    x = 8,027.09

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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.