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Finding the Fourth Proportional to 58,078.92, 87,066.78 and 20,634.06

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Solution

The fourth proportional to 58,078.92, 87,066.78 and 20,634.06 is: 30,932.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,078.92 : 87,066.78 = 20,634.06 : x
  2. Step 2: Convert to fraction form
    58,078.92/87,066.78 = 20,634.06/x
  3. Step 3: Cross multiply
    58,078.92x = 87,066.78 × 20,634.06
  4. Step 4: Simplify right side
    58,078.92x = 1,796,541,162.53
  5. Step 5: Solve for x
    x = 1,796,541,162.53/58,078.92
  6. Step 6: Final answer
    x = 30,932.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.