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Finding the Fourth Proportional to 117,006.92, 161,469.62 and 66,030.51

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Solution

The fourth proportional to 117,006.92, 161,469.62 and 66,030.51 is: 91,122.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,006.92 : 161,469.62 = 66,030.51 : x
  2. Step 2: Convert to fraction form
    117,006.92/161,469.62 = 66,030.51/x
  3. Step 3: Cross multiply
    117,006.92x = 161,469.62 × 66,030.51
  4. Step 4: Simplify right side
    117,006.92x = 10,661,921,358.11
  5. Step 5: Solve for x
    x = 10,661,921,358.11/117,006.92
  6. Step 6: Final answer
    x = 91,122.14

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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.