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Finding the Fourth Proportional to 220,583.82, 330,864.78 and 70,831.44

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Solution

The fourth proportional to 220,583.82, 330,864.78 and 70,831.44 is: 106,243.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,583.82 : 330,864.78 = 70,831.44 : x
  2. Step 2: Convert to fraction form
    220,583.82/330,864.78 = 70,831.44/x
  3. Step 3: Cross multiply
    220,583.82x = 330,864.78 × 70,831.44
  4. Step 4: Simplify right side
    220,583.82x = 23,435,628,812.68
  5. Step 5: Solve for x
    x = 23,435,628,812.68/220,583.82
  6. Step 6: Final answer
    x = 106,243.64

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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.