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Finding the Fourth Proportional to 7,924.92, 10,936.43 and 4,388.19

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Solution

The fourth proportional to 7,924.92, 10,936.43 and 4,388.19 is: 6,055.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,924.92 : 10,936.43 = 4,388.19 : x
  2. Step 2: Convert to fraction form
    7,924.92/10,936.43 = 4,388.19/x
  3. Step 3: Cross multiply
    7,924.92x = 10,936.43 × 4,388.19
  4. Step 4: Simplify right side
    7,924.92x = 47,991,132.76
  5. Step 5: Solve for x
    x = 47,991,132.76/7,924.92
  6. Step 6: Final answer
    x = 6,055.72

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Double scale
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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.