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Finding the Fourth Proportional to 117,290.67, 161,954.29 and 108,334.90

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Solution

The fourth proportional to 117,290.67, 161,954.29 and 108,334.90 is: 149,588.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,290.67 : 161,954.29 = 108,334.90 : x
  2. Step 2: Convert to fraction form
    117,290.67/161,954.29 = 108,334.90/x
  3. Step 3: Cross multiply
    117,290.67x = 161,954.29 × 108,334.90
  4. Step 4: Simplify right side
    117,290.67x = 17,545,301,540.20
  5. Step 5: Solve for x
    x = 17,545,301,540.20/117,290.67
  6. Step 6: Final answer
    x = 149,588.22

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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.