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Finding the Fourth Proportional to 17,993.76, 26,994.64 and 5,515.52

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Solution

The fourth proportional to 17,993.76, 26,994.64 and 5,515.52 is: 8,274.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,993.76 : 26,994.64 = 5,515.52 : x
  2. Step 2: Convert to fraction form
    17,993.76/26,994.64 = 5,515.52/x
  3. Step 3: Cross multiply
    17,993.76x = 26,994.64 × 5,515.52
  4. Step 4: Simplify right side
    17,993.76x = 148,889,476.81
  5. Step 5: Solve for x
    x = 148,889,476.81/17,993.76
  6. Step 6: Final answer
    x = 8,274.51

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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.