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Finding the Fourth Proportional to 117,392.74, 161,997.60 and 63,675.96

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Solution

The fourth proportional to 117,392.74, 161,997.60 and 63,675.96 is: 87,870.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,392.74 : 161,997.60 = 63,675.96 : x
  2. Step 2: Convert to fraction form
    117,392.74/161,997.60 = 63,675.96/x
  3. Step 3: Cross multiply
    117,392.74x = 161,997.60 × 63,675.96
  4. Step 4: Simplify right side
    117,392.74x = 10,315,352,697.70
  5. Step 5: Solve for x
    x = 10,315,352,697.70/117,392.74
  6. Step 6: Final answer
    x = 87,870.45

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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.