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Finding the Fourth Proportional to 5,720.85, 7,895.07 and 3,363.21

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Solution

The fourth proportional to 5,720.85, 7,895.07 and 3,363.21 is: 4,641.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,720.85 : 7,895.07 = 3,363.21 : x
  2. Step 2: Convert to fraction form
    5,720.85/7,895.07 = 3,363.21/x
  3. Step 3: Cross multiply
    5,720.85x = 7,895.07 × 3,363.21
  4. Step 4: Simplify right side
    5,720.85x = 26,552,778.37
  5. Step 5: Solve for x
    x = 26,552,778.37/5,720.85
  6. Step 6: Final answer
    x = 4,641.40

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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.