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Finding the Fourth Proportional to 118,507.83, 177,831.90 and 43,680.53

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Solution

The fourth proportional to 118,507.83, 177,831.90 and 43,680.53 is: 65,546.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,507.83 : 177,831.90 = 43,680.53 : x
  2. Step 2: Convert to fraction form
    118,507.83/177,831.90 = 43,680.53/x
  3. Step 3: Cross multiply
    118,507.83x = 177,831.90 × 43,680.53
  4. Step 4: Simplify right side
    118,507.83x = 7,767,792,087.49
  5. Step 5: Solve for x
    x = 7,767,792,087.49/118,507.83
  6. Step 6: Final answer
    x = 65,546.66

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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.