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Finding the Fourth Proportional to 7,610.76, 11,415.87 and 2,993.76

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Solution

The fourth proportional to 7,610.76, 11,415.87 and 2,993.76 is: 4,490.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,610.76 : 11,415.87 = 2,993.76 : x
  2. Step 2: Convert to fraction form
    7,610.76/11,415.87 = 2,993.76/x
  3. Step 3: Cross multiply
    7,610.76x = 11,415.87 × 2,993.76
  4. Step 4: Simplify right side
    7,610.76x = 34,176,374.97
  5. Step 5: Solve for x
    x = 34,176,374.97/7,610.76
  6. Step 6: Final answer
    x = 4,490.53

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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.