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Finding the Fourth Proportional to 63,408.87, 87,440.31 and 46,415.88

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Solution

The fourth proportional to 63,408.87, 87,440.31 and 46,415.88 is: 64,007.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,408.87 : 87,440.31 = 46,415.88 : x
  2. Step 2: Convert to fraction form
    63,408.87/87,440.31 = 46,415.88/x
  3. Step 3: Cross multiply
    63,408.87x = 87,440.31 × 46,415.88
  4. Step 4: Simplify right side
    63,408.87x = 4,058,618,936.12
  5. Step 5: Solve for x
    x = 4,058,618,936.12/63,408.87
  6. Step 6: Final answer
    x = 64,007.12

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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.