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Finding the Fourth Proportional to 88,911.90, 122,699.88 and 53,105.04

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Solution

The fourth proportional to 88,911.90, 122,699.88 and 53,105.04 is: 73,285.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,911.90 : 122,699.88 = 53,105.04 : x
  2. Step 2: Convert to fraction form
    88,911.90/122,699.88 = 53,105.04/x
  3. Step 3: Cross multiply
    88,911.90x = 122,699.88 × 53,105.04
  4. Step 4: Simplify right side
    88,911.90x = 6,515,982,035.40
  5. Step 5: Solve for x
    x = 6,515,982,035.40/88,911.90
  6. Step 6: Final answer
    x = 73,285.83

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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.