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Finding the Fourth Proportional to 117,992.70, 162,506.25 and 115,805.70

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Solution

The fourth proportional to 117,992.70, 162,506.25 and 115,805.70 is: 159,494.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,992.70 : 162,506.25 = 115,805.70 : x
  2. Step 2: Convert to fraction form
    117,992.70/162,506.25 = 115,805.70/x
  3. Step 3: Cross multiply
    117,992.70x = 162,506.25 × 115,805.70
  4. Step 4: Simplify right side
    117,992.70x = 18,819,150,035.63
  5. Step 5: Solve for x
    x = 18,819,150,035.63/117,992.70
  6. Step 6: Final answer
    x = 159,494.19

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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.