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Finding the Fourth Proportional to 6,936.64, 9,572.76 and 3,792.88

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Solution

The fourth proportional to 6,936.64, 9,572.76 and 3,792.88 is: 5,234.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,936.64 : 9,572.76 = 3,792.88 : x
  2. Step 2: Convert to fraction form
    6,936.64/9,572.76 = 3,792.88/x
  3. Step 3: Cross multiply
    6,936.64x = 9,572.76 × 3,792.88
  4. Step 4: Simplify right side
    6,936.64x = 36,308,329.95
  5. Step 5: Solve for x
    x = 36,308,329.95/6,936.64
  6. Step 6: Final answer
    x = 5,234.28

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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.