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Finding the Fourth Proportional to 272,943.98, 409,359.50 and 73,216.88

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Solution

The fourth proportional to 272,943.98, 409,359.50 and 73,216.88 is: 109,810.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,943.98 : 409,359.50 = 73,216.88 : x
  2. Step 2: Convert to fraction form
    272,943.98/409,359.50 = 73,216.88/x
  3. Step 3: Cross multiply
    272,943.98x = 409,359.50 × 73,216.88
  4. Step 4: Simplify right side
    272,943.98x = 29,972,025,388.36
  5. Step 5: Solve for x
    x = 29,972,025,388.36/272,943.98
  6. Step 6: Final answer
    x = 109,810.17

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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.