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Finding the Fourth Proportional to 63,707.91, 87,918.60 and 35,028.78

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Solution

The fourth proportional to 63,707.91, 87,918.60 and 35,028.78 is: 48,340.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,707.91 : 87,918.60 = 35,028.78 : x
  2. Step 2: Convert to fraction form
    63,707.91/87,918.60 = 35,028.78/x
  3. Step 3: Cross multiply
    63,707.91x = 87,918.60 × 35,028.78
  4. Step 4: Simplify right side
    63,707.91x = 3,079,681,297.31
  5. Step 5: Solve for x
    x = 3,079,681,297.31/63,707.91
  6. Step 6: Final answer
    x = 48,340.64

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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.