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Finding the Fourth Proportional to 5,776.56, 7,971.66 and 3,123.97

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Solution

The fourth proportional to 5,776.56, 7,971.66 and 3,123.97 is: 4,311.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,776.56 : 7,971.66 = 3,123.97 : x
  2. Step 2: Convert to fraction form
    5,776.56/7,971.66 = 3,123.97/x
  3. Step 3: Cross multiply
    5,776.56x = 7,971.66 × 3,123.97
  4. Step 4: Simplify right side
    5,776.56x = 24,903,211.07
  5. Step 5: Solve for x
    x = 24,903,211.07/5,776.56
  6. Step 6: Final answer
    x = 4,311.08

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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.