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Finding the Fourth Proportional to 5,370.72, 7,411.08 and 3,012.72

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Solution

The fourth proportional to 5,370.72, 7,411.08 and 3,012.72 is: 4,157.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,370.72 : 7,411.08 = 3,012.72 : x
  2. Step 2: Convert to fraction form
    5,370.72/7,411.08 = 3,012.72/x
  3. Step 3: Cross multiply
    5,370.72x = 7,411.08 × 3,012.72
  4. Step 4: Simplify right side
    5,370.72x = 22,327,508.94
  5. Step 5: Solve for x
    x = 22,327,508.94/5,370.72
  6. Step 6: Final answer
    x = 4,157.27

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1.5x scale

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.