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Finding the Fourth Proportional to 90,646.88, 135,949.81 and 34,466.96

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Solution

The fourth proportional to 90,646.88, 135,949.81 and 34,466.96 is: 51,692.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,646.88 : 135,949.81 = 34,466.96 : x
  2. Step 2: Convert to fraction form
    90,646.88/135,949.81 = 34,466.96/x
  3. Step 3: Cross multiply
    90,646.88x = 135,949.81 × 34,466.96
  4. Step 4: Simplify right side
    90,646.88x = 4,685,776,663.28
  5. Step 5: Solve for x
    x = 4,685,776,663.28/90,646.88
  6. Step 6: Final answer
    x = 51,692.64

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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.