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Finding the Fourth Proportional to 5,290.32, 7,934.40 and 2,002.28

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Solution

The fourth proportional to 5,290.32, 7,934.40 and 2,002.28 is: 3,003.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,290.32 : 7,934.40 = 2,002.28 : x
  2. Step 2: Convert to fraction form
    5,290.32/7,934.40 = 2,002.28/x
  3. Step 3: Cross multiply
    5,290.32x = 7,934.40 × 2,002.28
  4. Step 4: Simplify right side
    5,290.32x = 15,886,890.43
  5. Step 5: Solve for x
    x = 15,886,890.43/5,290.32
  6. Step 6: Final answer
    x = 3,003.01

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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.