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Finding the Fourth Proportional to 181,712.80, 272,569.20 and 92,936.80

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Solution

The fourth proportional to 181,712.80, 272,569.20 and 92,936.80 is: 139,405.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,712.80 : 272,569.20 = 92,936.80 : x
  2. Step 2: Convert to fraction form
    181,712.80/272,569.20 = 92,936.80/x
  3. Step 3: Cross multiply
    181,712.80x = 272,569.20 × 92,936.80
  4. Step 4: Simplify right side
    181,712.80x = 25,331,709,226.56
  5. Step 5: Solve for x
    x = 25,331,709,226.56/181,712.80
  6. Step 6: Final answer
    x = 139,405.20

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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.