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Finding the Fourth Proportional to 69,911.87, 96,535.34 and 56,993.22

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Solution

The fourth proportional to 69,911.87, 96,535.34 and 56,993.22 is: 78,697.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,911.87 : 96,535.34 = 56,993.22 : x
  2. Step 2: Convert to fraction form
    69,911.87/96,535.34 = 56,993.22/x
  3. Step 3: Cross multiply
    69,911.87x = 96,535.34 × 56,993.22
  4. Step 4: Simplify right side
    69,911.87x = 5,501,859,585.43
  5. Step 5: Solve for x
    x = 5,501,859,585.43/69,911.87
  6. Step 6: Final answer
    x = 78,697.08

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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.