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Finding the Fourth Proportional to 5,710.64, 7,880.40 and 3,193.08

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Solution

The fourth proportional to 5,710.64, 7,880.40 and 3,193.08 is: 4,406.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,710.64 : 7,880.40 = 3,193.08 : x
  2. Step 2: Convert to fraction form
    5,710.64/7,880.40 = 3,193.08/x
  3. Step 3: Cross multiply
    5,710.64x = 7,880.40 × 3,193.08
  4. Step 4: Simplify right side
    5,710.64x = 25,162,747.63
  5. Step 5: Solve for x
    x = 25,162,747.63/5,710.64
  6. Step 6: Final answer
    x = 4,406.29

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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.