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Finding the Fourth Proportional to 117,478.01, 162,119.85 and 63,763.03

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Solution

The fourth proportional to 117,478.01, 162,119.85 and 63,763.03 is: 87,993.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,478.01 : 162,119.85 = 63,763.03 : x
  2. Step 2: Convert to fraction form
    117,478.01/162,119.85 = 63,763.03/x
  3. Step 3: Cross multiply
    117,478.01x = 162,119.85 × 63,763.03
  4. Step 4: Simplify right side
    117,478.01x = 10,337,252,822.68
  5. Step 5: Solve for x
    x = 10,337,252,822.68/117,478.01
  6. Step 6: Final answer
    x = 87,993.09

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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.