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Finding the Fourth Proportional to 270,427.16, 405,707.13 and 92,936.72

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Solution

The fourth proportional to 270,427.16, 405,707.13 and 92,936.72 is: 139,427.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,427.16 : 405,707.13 = 92,936.72 : x
  2. Step 2: Convert to fraction form
    270,427.16/405,707.13 = 92,936.72/x
  3. Step 3: Cross multiply
    270,427.16x = 405,707.13 × 92,936.72
  4. Step 4: Simplify right side
    270,427.16x = 37,705,087,914.28
  5. Step 5: Solve for x
    x = 37,705,087,914.28/270,427.16
  6. Step 6: Final answer
    x = 139,427.89

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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.