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Finding the Fourth Proportional to 2,935.01, 4,402.80 and 855.04

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Solution

The fourth proportional to 2,935.01, 4,402.80 and 855.04 is: 1,282.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,935.01 : 4,402.80 = 855.04 : x
  2. Step 2: Convert to fraction form
    2,935.01/4,402.80 = 855.04/x
  3. Step 3: Cross multiply
    2,935.01x = 4,402.80 × 855.04
  4. Step 4: Simplify right side
    2,935.01x = 3,764,548.10
  5. Step 5: Solve for x
    x = 3,764,548.10/2,935.01
  6. Step 6: Final answer
    x = 1,282.64

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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.