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Finding the Fourth Proportional to 364,692.12, 547,092.72 and 127,993.20

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Solution

The fourth proportional to 364,692.12, 547,092.72 and 127,993.20 is: 192,008.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,692.12 : 547,092.72 = 127,993.20 : x
  2. Step 2: Convert to fraction form
    364,692.12/547,092.72 = 127,993.20/x
  3. Step 3: Cross multiply
    364,692.12x = 547,092.72 × 127,993.20
  4. Step 4: Simplify right side
    364,692.12x = 70,024,147,929.50
  5. Step 5: Solve for x
    x = 70,024,147,929.50/364,692.12
  6. Step 6: Final answer
    x = 192,008.94

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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.