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Finding the Fourth Proportional to 84,992.90, 117,296.57 and 51,002.87

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Solution

The fourth proportional to 84,992.90, 117,296.57 and 51,002.87 is: 70,387.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,992.90 : 117,296.57 = 51,002.87 : x
  2. Step 2: Convert to fraction form
    84,992.90/117,296.57 = 51,002.87/x
  3. Step 3: Cross multiply
    84,992.90x = 117,296.57 × 51,002.87
  4. Step 4: Simplify right side
    84,992.90x = 5,982,461,252.18
  5. Step 5: Solve for x
    x = 5,982,461,252.18/84,992.90
  6. Step 6: Final answer
    x = 70,387.78

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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.