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Finding the Fourth Proportional to 128,692.22, 193,029.85 and 44,453.59

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Solution

The fourth proportional to 128,692.22, 193,029.85 and 44,453.59 is: 66,677.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,692.22 : 193,029.85 = 44,453.59 : x
  2. Step 2: Convert to fraction form
    128,692.22/193,029.85 = 44,453.59/x
  3. Step 3: Cross multiply
    128,692.22x = 193,029.85 × 44,453.59
  4. Step 4: Simplify right side
    128,692.22x = 8,580,868,844.51
  5. Step 5: Solve for x
    x = 8,580,868,844.51/128,692.22
  6. Step 6: Final answer
    x = 66,677.45

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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.