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Finding the Fourth Proportional to 62,969.36, 86,898.85 and 34,289.87

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Solution

The fourth proportional to 62,969.36, 86,898.85 and 34,289.87 is: 47,320.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,969.36 : 86,898.85 = 34,289.87 : x
  2. Step 2: Convert to fraction form
    62,969.36/86,898.85 = 34,289.87/x
  3. Step 3: Cross multiply
    62,969.36x = 86,898.85 × 34,289.87
  4. Step 4: Simplify right side
    62,969.36x = 2,979,749,749.43
  5. Step 5: Solve for x
    x = 2,979,749,749.43/62,969.36
  6. Step 6: Final answer
    x = 47,320.63

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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.