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Finding the Fourth Proportional to 70,660.62, 105,991.07 and 17,352.63

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Solution

The fourth proportional to 70,660.62, 105,991.07 and 17,352.63 is: 26,028.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,660.62 : 105,991.07 = 17,352.63 : x
  2. Step 2: Convert to fraction form
    70,660.62/105,991.07 = 17,352.63/x
  3. Step 3: Cross multiply
    70,660.62x = 105,991.07 × 17,352.63
  4. Step 4: Simplify right side
    70,660.62x = 1,839,223,734.25
  5. Step 5: Solve for x
    x = 1,839,223,734.25/70,660.62
  6. Step 6: Final answer
    x = 26,028.98

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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.