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Finding the Fourth Proportional to 93,610.25, 129,161.79 and 55,371.90

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Solution

The fourth proportional to 93,610.25, 129,161.79 and 55,371.90 is: 76,401.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,610.25 : 129,161.79 = 55,371.90 : x
  2. Step 2: Convert to fraction form
    93,610.25/129,161.79 = 55,371.90/x
  3. Step 3: Cross multiply
    93,610.25x = 129,161.79 × 55,371.90
  4. Step 4: Simplify right side
    93,610.25x = 7,151,934,204.06
  5. Step 5: Solve for x
    x = 7,151,934,204.06/93,610.25
  6. Step 6: Final answer
    x = 76,401.19

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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.