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Finding the Fourth Proportional to 5,681.61, 7,836.75 and 3,792.42

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Solution

The fourth proportional to 5,681.61, 7,836.75 and 3,792.42 is: 5,230.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,681.61 : 7,836.75 = 3,792.42 : x
  2. Step 2: Convert to fraction form
    5,681.61/7,836.75 = 3,792.42/x
  3. Step 3: Cross multiply
    5,681.61x = 7,836.75 × 3,792.42
  4. Step 4: Simplify right side
    5,681.61x = 29,720,247.44
  5. Step 5: Solve for x
    x = 29,720,247.44/5,681.61
  6. Step 6: Final answer
    x = 5,230.96

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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.