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Finding the Fourth Proportional to 69,574.70, 104,175.07 and 57,243.53

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Solution

The fourth proportional to 69,574.70, 104,175.07 and 57,243.53 is: 85,711.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,574.70 : 104,175.07 = 57,243.53 : x
  2. Step 2: Convert to fraction form
    69,574.70/104,175.07 = 57,243.53/x
  3. Step 3: Cross multiply
    69,574.70x = 104,175.07 × 57,243.53
  4. Step 4: Simplify right side
    69,574.70x = 5,963,348,744.80
  5. Step 5: Solve for x
    x = 5,963,348,744.80/69,574.70
  6. Step 6: Final answer
    x = 85,711.45

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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.