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Finding the Fourth Proportional to 5,859.77, 8,079.21 and 3,867.17

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Solution

The fourth proportional to 5,859.77, 8,079.21 and 3,867.17 is: 5,331.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,859.77 : 8,079.21 = 3,867.17 : x
  2. Step 2: Convert to fraction form
    5,859.77/8,079.21 = 3,867.17/x
  3. Step 3: Cross multiply
    5,859.77x = 8,079.21 × 3,867.17
  4. Step 4: Simplify right side
    5,859.77x = 31,243,638.14
  5. Step 5: Solve for x
    x = 31,243,638.14/5,859.77
  6. Step 6: Final answer
    x = 5,331.89

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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.