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Finding the Fourth Proportional to 7,415.82, 11,126.51 and 3,855.71

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Solution

The fourth proportional to 7,415.82, 11,126.51 and 3,855.71 is: 5,785.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,415.82 : 11,126.51 = 3,855.71 : x
  2. Step 2: Convert to fraction form
    7,415.82/11,126.51 = 3,855.71/x
  3. Step 3: Cross multiply
    7,415.82x = 11,126.51 × 3,855.71
  4. Step 4: Simplify right side
    7,415.82x = 42,900,595.87
  5. Step 5: Solve for x
    x = 42,900,595.87/7,415.82
  6. Step 6: Final answer
    x = 5,785.01

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.