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Finding the Fourth Proportional to 7,308.99, 10,039.29 and 7,168.91

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Solution

The fourth proportional to 7,308.99, 10,039.29 and 7,168.91 is: 9,846.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,308.99 : 10,039.29 = 7,168.91 : x
  2. Step 2: Convert to fraction form
    7,308.99/10,039.29 = 7,168.91/x
  3. Step 3: Cross multiply
    7,308.99x = 10,039.29 × 7,168.91
  4. Step 4: Simplify right side
    7,308.99x = 71,970,716.28
  5. Step 5: Solve for x
    x = 71,970,716.28/7,308.99
  6. Step 6: Final answer
    x = 9,846.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.