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Finding the Fourth Proportional to 106,620.48, 159,931.47 and 73,239.36

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Solution

The fourth proportional to 106,620.48, 159,931.47 and 73,239.36 is: 109,859.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,620.48 : 159,931.47 = 73,239.36 : x
  2. Step 2: Convert to fraction form
    106,620.48/159,931.47 = 73,239.36/x
  3. Step 3: Cross multiply
    106,620.48x = 159,931.47 × 73,239.36
  4. Step 4: Simplify right side
    106,620.48x = 11,713,278,506.66
  5. Step 5: Solve for x
    x = 11,713,278,506.66/106,620.48
  6. Step 6: Final answer
    x = 109,859.56

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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.