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Finding the Fourth Proportional to 7,991.36, 11,035.68 and 7,555.04

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Solution

The fourth proportional to 7,991.36, 11,035.68 and 7,555.04 is: 10,433.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,991.36 : 11,035.68 = 7,555.04 : x
  2. Step 2: Convert to fraction form
    7,991.36/11,035.68 = 7,555.04/x
  3. Step 3: Cross multiply
    7,991.36x = 11,035.68 × 7,555.04
  4. Step 4: Simplify right side
    7,991.36x = 83,375,003.83
  5. Step 5: Solve for x
    x = 83,375,003.83/7,991.36
  6. Step 6: Final answer
    x = 10,433.14

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Half scale
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Double scale
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Similar ratio
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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.