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Finding the Fourth Proportional to 6,755.69, 9,320.20 and 3,922.58

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Solution

The fourth proportional to 6,755.69, 9,320.20 and 3,922.58 is: 5,411.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,755.69 : 9,320.20 = 3,922.58 : x
  2. Step 2: Convert to fraction form
    6,755.69/9,320.20 = 3,922.58/x
  3. Step 3: Cross multiply
    6,755.69x = 9,320.20 × 3,922.58
  4. Step 4: Simplify right side
    6,755.69x = 36,559,173.71
  5. Step 5: Solve for x
    x = 36,559,173.71/6,755.69
  6. Step 6: Final answer
    x = 5,411.62

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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.