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Finding the Fourth Proportional to 107,469.45, 148,208.74 and 73,065.92

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Solution

The fourth proportional to 107,469.45, 148,208.74 and 73,065.92 is: 100,763.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,469.45 : 148,208.74 = 73,065.92 : x
  2. Step 2: Convert to fraction form
    107,469.45/148,208.74 = 73,065.92/x
  3. Step 3: Cross multiply
    107,469.45x = 148,208.74 × 73,065.92
  4. Step 4: Simplify right side
    107,469.45x = 10,829,007,016.43
  5. Step 5: Solve for x
    x = 10,829,007,016.43/107,469.45
  6. Step 6: Final answer
    x = 100,763.58

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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.