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Finding the Fourth Proportional to 4,891.84, 6,750.72 and 2,796

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Solution

The fourth proportional to 4,891.84, 6,750.72 and 2,796 is: 3,858.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,891.84 : 6,750.72 = 2,796 : x
  2. Step 2: Convert to fraction form
    4,891.84/6,750.72 = 2,796/x
  3. Step 3: Cross multiply
    4,891.84x = 6,750.72 × 2,796
  4. Step 4: Simplify right side
    4,891.84x = 18,875,013.12
  5. Step 5: Solve for x
    x = 18,875,013.12/4,891.84
  6. Step 6: Final answer
    x = 3,858.47

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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.