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Finding the Fourth Proportional to 63,015.66, 86,967.74 and 47,072.43

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Solution

The fourth proportional to 63,015.66, 86,967.74 and 47,072.43 is: 64,964.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,015.66 : 86,967.74 = 47,072.43 : x
  2. Step 2: Convert to fraction form
    63,015.66/86,967.74 = 47,072.43/x
  3. Step 3: Cross multiply
    63,015.66x = 86,967.74 × 47,072.43
  4. Step 4: Simplify right side
    63,015.66x = 4,093,782,853.41
  5. Step 5: Solve for x
    x = 4,093,782,853.41/63,015.66
  6. Step 6: Final answer
    x = 64,964.53

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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.