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Finding the Fourth Proportional to 279,411.11, 419,179.17 and 101,918.13

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Solution

The fourth proportional to 279,411.11, 419,179.17 and 101,918.13 is: 152,899.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,411.11 : 419,179.17 = 101,918.13 : x
  2. Step 2: Convert to fraction form
    279,411.11/419,179.17 = 101,918.13/x
  3. Step 3: Cross multiply
    279,411.11x = 419,179.17 × 101,918.13
  4. Step 4: Simplify right side
    279,411.11x = 42,721,957,141.35
  5. Step 5: Solve for x
    x = 42,721,957,141.35/279,411.11
  6. Step 6: Final answer
    x = 152,899.99

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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.