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Finding the Fourth Proportional to 3,357.42, 4,633.21 and 1,865.31

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Solution

The fourth proportional to 3,357.42, 4,633.21 and 1,865.31 is: 2,574.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,357.42 : 4,633.21 = 1,865.31 : x
  2. Step 2: Convert to fraction form
    3,357.42/4,633.21 = 1,865.31/x
  3. Step 3: Cross multiply
    3,357.42x = 4,633.21 × 1,865.31
  4. Step 4: Simplify right side
    3,357.42x = 8,642,376.81
  5. Step 5: Solve for x
    x = 8,642,376.81/3,357.42
  6. Step 6: Final answer
    x = 2,574.11

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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.