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Finding the Fourth Proportional to 215,496.46, 323,244.94 and 65,728.82

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Solution

The fourth proportional to 215,496.46, 323,244.94 and 65,728.82 is: 98,593.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,496.46 : 323,244.94 = 65,728.82 : x
  2. Step 2: Convert to fraction form
    215,496.46/323,244.94 = 65,728.82/x
  3. Step 3: Cross multiply
    215,496.46x = 323,244.94 × 65,728.82
  4. Step 4: Simplify right side
    215,496.46x = 21,246,508,477.17
  5. Step 5: Solve for x
    x = 21,246,508,477.17/215,496.46
  6. Step 6: Final answer
    x = 98,593.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.