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Finding the Fourth Proportional to 69,963.90, 104,914.89 and 20,032.62

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Solution

The fourth proportional to 69,963.90, 104,914.89 and 20,032.62 is: 30,040.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,963.90 : 104,914.89 = 20,032.62 : x
  2. Step 2: Convert to fraction form
    69,963.90/104,914.89 = 20,032.62/x
  3. Step 3: Cross multiply
    69,963.90x = 104,914.89 × 20,032.62
  4. Step 4: Simplify right side
    69,963.90x = 2,101,720,123.71
  5. Step 5: Solve for x
    x = 2,101,720,123.71/69,963.90
  6. Step 6: Final answer
    x = 30,040.07

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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.