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Finding the Fourth Proportional to 270,250.12, 405,384.81 and 92,755.90

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Solution

The fourth proportional to 270,250.12, 405,384.81 and 92,755.90 is: 139,137.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,250.12 : 405,384.81 = 92,755.90 : x
  2. Step 2: Convert to fraction form
    270,250.12/405,384.81 = 92,755.90/x
  3. Step 3: Cross multiply
    270,250.12x = 405,384.81 × 92,755.90
  4. Step 4: Simplify right side
    270,250.12x = 37,601,832,897.88
  5. Step 5: Solve for x
    x = 37,601,832,897.88/270,250.12
  6. Step 6: Final answer
    x = 139,137.16

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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.