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Finding the Fourth Proportional to 6,722.82, 9,277.65 and 3,738.55

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Solution

The fourth proportional to 6,722.82, 9,277.65 and 3,738.55 is: 5,159.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,722.82 : 9,277.65 = 3,738.55 : x
  2. Step 2: Convert to fraction form
    6,722.82/9,277.65 = 3,738.55/x
  3. Step 3: Cross multiply
    6,722.82x = 9,277.65 × 3,738.55
  4. Step 4: Simplify right side
    6,722.82x = 34,684,925.87
  5. Step 5: Solve for x
    x = 34,684,925.87/6,722.82
  6. Step 6: Final answer
    x = 5,159.28

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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.