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Finding the Fourth Proportional to 5,351.76, 7,385.34 and 2,993.88

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Solution

The fourth proportional to 5,351.76, 7,385.34 and 2,993.88 is: 4,131.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,351.76 : 7,385.34 = 2,993.88 : x
  2. Step 2: Convert to fraction form
    5,351.76/7,385.34 = 2,993.88/x
  3. Step 3: Cross multiply
    5,351.76x = 7,385.34 × 2,993.88
  4. Step 4: Simplify right side
    5,351.76x = 22,110,821.72
  5. Step 5: Solve for x
    x = 22,110,821.72/5,351.76
  6. Step 6: Final answer
    x = 4,131.50

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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.