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Finding the Fourth Proportional to 7,620.54, 11,426.22 and 3,235.74

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Solution

The fourth proportional to 7,620.54, 11,426.22 and 3,235.74 is: 4,851.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,620.54 : 11,426.22 = 3,235.74 : x
  2. Step 2: Convert to fraction form
    7,620.54/11,426.22 = 3,235.74/x
  3. Step 3: Cross multiply
    7,620.54x = 11,426.22 × 3,235.74
  4. Step 4: Simplify right side
    7,620.54x = 36,972,277.10
  5. Step 5: Solve for x
    x = 36,972,277.10/7,620.54
  6. Step 6: Final answer
    x = 4,851.66

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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.