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Finding the Fourth Proportional to 207,691.60, 286,615.56 and 117,049

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Solution

The fourth proportional to 207,691.60, 286,615.56 and 117,049 is: 161,528.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,691.60 : 286,615.56 = 117,049 : x
  2. Step 2: Convert to fraction form
    207,691.60/286,615.56 = 117,049/x
  3. Step 3: Cross multiply
    207,691.60x = 286,615.56 × 117,049
  4. Step 4: Simplify right side
    207,691.60x = 33,548,064,682.44
  5. Step 5: Solve for x
    x = 33,548,064,682.44/207,691.60
  6. Step 6: Final answer
    x = 161,528.27

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.