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Finding the Fourth Proportional to 69,344.64, 95,688 and 39,536.64

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Solution

The fourth proportional to 69,344.64, 95,688 and 39,536.64 is: 54,556.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,344.64 : 95,688 = 39,536.64 : x
  2. Step 2: Convert to fraction form
    69,344.64/95,688 = 39,536.64/x
  3. Step 3: Cross multiply
    69,344.64x = 95,688 × 39,536.64
  4. Step 4: Simplify right side
    69,344.64x = 3,783,182,008.32
  5. Step 5: Solve for x
    x = 3,783,182,008.32/69,344.64
  6. Step 6: Final answer
    x = 54,556.23

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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.