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Finding the Fourth Proportional to 63,720.71, 87,936.81 and 35,041.55

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Solution

The fourth proportional to 63,720.71, 87,936.81 and 35,041.55 is: 48,358.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,720.71 : 87,936.81 = 35,041.55 : x
  2. Step 2: Convert to fraction form
    63,720.71/87,936.81 = 35,041.55/x
  3. Step 3: Cross multiply
    63,720.71x = 87,936.81 × 35,041.55
  4. Step 4: Simplify right side
    63,720.71x = 3,081,441,553.37
  5. Step 5: Solve for x
    x = 3,081,441,553.37/63,720.71
  6. Step 6: Final answer
    x = 48,358.56

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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.