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Finding the Fourth Proportional to 66,545.49, 91,831.29 and 36,329.64

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Solution

The fourth proportional to 66,545.49, 91,831.29 and 36,329.64 is: 50,134.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,545.49 : 91,831.29 = 36,329.64 : x
  2. Step 2: Convert to fraction form
    66,545.49/91,831.29 = 36,329.64/x
  3. Step 3: Cross multiply
    66,545.49x = 91,831.29 × 36,329.64
  4. Step 4: Simplify right side
    66,545.49x = 3,336,197,706.44
  5. Step 5: Solve for x
    x = 3,336,197,706.44/66,545.49
  6. Step 6: Final answer
    x = 50,134.09

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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.