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Finding the Fourth Proportional to 69,434.66, 104,068.47 and 39,871.46

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Solution

The fourth proportional to 69,434.66, 104,068.47 and 39,871.46 is: 59,759.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,434.66 : 104,068.47 = 39,871.46 : x
  2. Step 2: Convert to fraction form
    69,434.66/104,068.47 = 39,871.46/x
  3. Step 3: Cross multiply
    69,434.66x = 104,068.47 × 39,871.46
  4. Step 4: Simplify right side
    69,434.66x = 4,149,361,838.87
  5. Step 5: Solve for x
    x = 4,149,361,838.87/69,434.66
  6. Step 6: Final answer
    x = 59,759.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.