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Finding the Fourth Proportional to 92,578.38, 138,838.86 and 33,406.32

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Solution

The fourth proportional to 92,578.38, 138,838.86 and 33,406.32 is: 50,099.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,578.38 : 138,838.86 = 33,406.32 : x
  2. Step 2: Convert to fraction form
    92,578.38/138,838.86 = 33,406.32/x
  3. Step 3: Cross multiply
    92,578.38x = 138,838.86 × 33,406.32
  4. Step 4: Simplify right side
    92,578.38x = 4,638,095,385.60
  5. Step 5: Solve for x
    x = 4,638,095,385.60/92,578.38
  6. Step 6: Final answer
    x = 50,099.12

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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.