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Finding the Fourth Proportional to 7,892.44, 10,891.80 and 4,355.88

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Solution

The fourth proportional to 7,892.44, 10,891.80 and 4,355.88 is: 6,011.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,892.44 : 10,891.80 = 4,355.88 : x
  2. Step 2: Convert to fraction form
    7,892.44/10,891.80 = 4,355.88/x
  3. Step 3: Cross multiply
    7,892.44x = 10,891.80 × 4,355.88
  4. Step 4: Simplify right side
    7,892.44x = 47,443,332.94
  5. Step 5: Solve for x
    x = 47,443,332.94/7,892.44
  6. Step 6: Final answer
    x = 6,011.24

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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.