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Finding the Fourth Proportional to 73,128.04, 100,917.14 and 39,594.04

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Solution

The fourth proportional to 73,128.04, 100,917.14 and 39,594.04 is: 54,640.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,128.04 : 100,917.14 = 39,594.04 : x
  2. Step 2: Convert to fraction form
    73,128.04/100,917.14 = 39,594.04/x
  3. Step 3: Cross multiply
    73,128.04x = 100,917.14 × 39,594.04
  4. Step 4: Simplify right side
    73,128.04x = 3,995,717,277.85
  5. Step 5: Solve for x
    x = 3,995,717,277.85/73,128.04
  6. Step 6: Final answer
    x = 54,640.02

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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.