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Finding the Fourth Proportional to 356,692.32, 535,039.48 and 90,453.02

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Solution

The fourth proportional to 356,692.32, 535,039.48 and 90,453.02 is: 135,679.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,692.32 : 535,039.48 = 90,453.02 : x
  2. Step 2: Convert to fraction form
    356,692.32/535,039.48 = 90,453.02/x
  3. Step 3: Cross multiply
    356,692.32x = 535,039.48 × 90,453.02
  4. Step 4: Simplify right side
    356,692.32x = 48,395,936,785.23
  5. Step 5: Solve for x
    x = 48,395,936,785.23/356,692.32
  6. Step 6: Final answer
    x = 135,679.78

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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.