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Finding the Fourth Proportional to 207,713.45, 286,645.81 and 115,838.54

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Solution

The fourth proportional to 207,713.45, 286,645.81 and 115,838.54 is: 159,857.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,713.45 : 286,645.81 = 115,838.54 : x
  2. Step 2: Convert to fraction form
    207,713.45/286,645.81 = 115,838.54/x
  3. Step 3: Cross multiply
    207,713.45x = 286,645.81 × 115,838.54
  4. Step 4: Simplify right side
    207,713.45x = 33,204,630,404.69
  5. Step 5: Solve for x
    x = 33,204,630,404.69/207,713.45
  6. Step 6: Final answer
    x = 159,857.88

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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.