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Finding the Fourth Proportional to 5,616.79, 7,751.90 and 4,670.97

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Solution

The fourth proportional to 5,616.79, 7,751.90 and 4,670.97 is: 6,446.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,616.79 : 7,751.90 = 4,670.97 : x
  2. Step 2: Convert to fraction form
    5,616.79/7,751.90 = 4,670.97/x
  3. Step 3: Cross multiply
    5,616.79x = 7,751.90 × 4,670.97
  4. Step 4: Simplify right side
    5,616.79x = 36,208,874.95
  5. Step 5: Solve for x
    x = 36,208,874.95/5,616.79
  6. Step 6: Final answer
    x = 6,446.54

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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.