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Finding the Fourth Proportional to 73,128.24, 100,917.36 and 39,594.24

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Solution

The fourth proportional to 73,128.24, 100,917.36 and 39,594.24 is: 54,640.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,128.24 : 100,917.36 = 39,594.24 : x
  2. Step 2: Convert to fraction form
    73,128.24/100,917.36 = 39,594.24/x
  3. Step 3: Cross multiply
    73,128.24x = 100,917.36 × 39,594.24
  4. Step 4: Simplify right side
    73,128.24x = 3,995,746,172.01
  5. Step 5: Solve for x
    x = 3,995,746,172.01/73,128.24
  6. Step 6: Final answer
    x = 54,640.26

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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.