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Finding the Fourth Proportional to 4,812, 6,643.80 and 2,952.24

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Solution

The fourth proportional to 4,812, 6,643.80 and 2,952.24 is: 4,076.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,812 : 6,643.80 = 2,952.24 : x
  2. Step 2: Convert to fraction form
    4,812/6,643.80 = 2,952.24/x
  3. Step 3: Cross multiply
    4,812x = 6,643.80 × 2,952.24
  4. Step 4: Simplify right side
    4,812x = 19,614,092.11
  5. Step 5: Solve for x
    x = 19,614,092.11/4,812
  6. Step 6: Final answer
    x = 4,076.08

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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.