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Finding the Fourth Proportional to 7,555.11, 10,426 and 4,197.91

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Solution

The fourth proportional to 7,555.11, 10,426 and 4,197.91 is: 5,793.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,555.11 : 10,426 = 4,197.91 : x
  2. Step 2: Convert to fraction form
    7,555.11/10,426 = 4,197.91/x
  3. Step 3: Cross multiply
    7,555.11x = 10,426 × 4,197.91
  4. Step 4: Simplify right side
    7,555.11x = 43,767,409.66
  5. Step 5: Solve for x
    x = 43,767,409.66/7,555.11
  6. Step 6: Final answer
    x = 5,793.09

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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.