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Finding the Fourth Proportional to 113,991.44, 157,307.81 and 63,690.44

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Solution

The fourth proportional to 113,991.44, 157,307.81 and 63,690.44 is: 87,892.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,991.44 : 157,307.81 = 63,690.44 : x
  2. Step 2: Convert to fraction form
    113,991.44/157,307.81 = 63,690.44/x
  3. Step 3: Cross multiply
    113,991.44x = 157,307.81 × 63,690.44
  4. Step 4: Simplify right side
    113,991.44x = 10,019,002,529.35
  5. Step 5: Solve for x
    x = 10,019,002,529.35/113,991.44
  6. Step 6: Final answer
    x = 87,892.59

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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.