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Finding the Fourth Proportional to 5,727.90, 7,904.13 and 3,369.59

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Solution

The fourth proportional to 5,727.90, 7,904.13 and 3,369.59 is: 4,649.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,727.90 : 7,904.13 = 3,369.59 : x
  2. Step 2: Convert to fraction form
    5,727.90/7,904.13 = 3,369.59/x
  3. Step 3: Cross multiply
    5,727.90x = 7,904.13 × 3,369.59
  4. Step 4: Simplify right side
    5,727.90x = 26,633,637.89
  5. Step 5: Solve for x
    x = 26,633,637.89/5,727.90
  6. Step 6: Final answer
    x = 4,649.81

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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.