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Finding the Fourth Proportional to 5,776.44, 7,971.49 and 3,123.84

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Solution

The fourth proportional to 5,776.44, 7,971.49 and 3,123.84 is: 4,310.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,776.44 : 7,971.49 = 3,123.84 : x
  2. Step 2: Convert to fraction form
    5,776.44/7,971.49 = 3,123.84/x
  3. Step 3: Cross multiply
    5,776.44x = 7,971.49 × 3,123.84
  4. Step 4: Simplify right side
    5,776.44x = 24,901,643.70
  5. Step 5: Solve for x
    x = 24,901,643.70/5,776.44
  6. Step 6: Final answer
    x = 4,310.90

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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.