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Finding the Fourth Proportional to 68,784.69, 103,155.75 and 33,223.92

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Solution

The fourth proportional to 68,784.69, 103,155.75 and 33,223.92 is: 49,825.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,784.69 : 103,155.75 = 33,223.92 : x
  2. Step 2: Convert to fraction form
    68,784.69/103,155.75 = 33,223.92/x
  3. Step 3: Cross multiply
    68,784.69x = 103,155.75 × 33,223.92
  4. Step 4: Simplify right side
    68,784.69x = 3,427,238,302.48
  5. Step 5: Solve for x
    x = 3,427,238,302.48/68,784.69
  6. Step 6: Final answer
    x = 49,825.60

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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.