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Finding the Fourth Proportional to 117,209.66, 161,749.17 and 63,494.91

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Solution

The fourth proportional to 117,209.66, 161,749.17 and 63,494.91 is: 87,622.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,209.66 : 161,749.17 = 63,494.91 : x
  2. Step 2: Convert to fraction form
    117,209.66/161,749.17 = 63,494.91/x
  3. Step 3: Cross multiply
    117,209.66x = 161,749.17 × 63,494.91
  4. Step 4: Simplify right side
    117,209.66x = 10,270,248,991.72
  5. Step 5: Solve for x
    x = 10,270,248,991.72/117,209.66
  6. Step 6: Final answer
    x = 87,622.89

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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.