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Finding the Fourth Proportional to 133,067.90, 199,699.05 and 88,679.90

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Solution

The fourth proportional to 133,067.90, 199,699.05 and 88,679.90 is: 133,084.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,067.90 : 199,699.05 = 88,679.90 : x
  2. Step 2: Convert to fraction form
    133,067.90/199,699.05 = 88,679.90/x
  3. Step 3: Cross multiply
    133,067.90x = 199,699.05 × 88,679.90
  4. Step 4: Simplify right side
    133,067.90x = 17,709,291,784.10
  5. Step 5: Solve for x
    x = 17,709,291,784.10/133,067.90
  6. Step 6: Final answer
    x = 133,084.63

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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.