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Finding the Fourth Proportional to 104,908.40, 157,751.40 and 87,801.20

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Solution

The fourth proportional to 104,908.40, 157,751.40 and 87,801.20 is: 132,027.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,908.40 : 157,751.40 = 87,801.20 : x
  2. Step 2: Convert to fraction form
    104,908.40/157,751.40 = 87,801.20/x
  3. Step 3: Cross multiply
    104,908.40x = 157,751.40 × 87,801.20
  4. Step 4: Simplify right side
    104,908.40x = 13,850,762,221.68
  5. Step 5: Solve for x
    x = 13,850,762,221.68/104,908.40
  6. Step 6: Final answer
    x = 132,027.20

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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.