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Finding the Fourth Proportional to 356,692.80, 535,121.14 and 120,029.16

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Solution

The fourth proportional to 356,692.80, 535,121.14 and 120,029.16 is: 180,071.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,692.80 : 535,121.14 = 120,029.16 : x
  2. Step 2: Convert to fraction form
    356,692.80/535,121.14 = 120,029.16/x
  3. Step 3: Cross multiply
    356,692.80x = 535,121.14 × 120,029.16
  4. Step 4: Simplify right side
    356,692.80x = 64,230,140,932.44
  5. Step 5: Solve for x
    x = 64,230,140,932.44/356,692.80
  6. Step 6: Final answer
    x = 180,071.31

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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.