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Finding the Fourth Proportional to 222,509.20, 333,731.40 and 64,721.20

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Solution

The fourth proportional to 222,509.20, 333,731.40 and 64,721.20 is: 97,072.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,509.20 : 333,731.40 = 64,721.20 : x
  2. Step 2: Convert to fraction form
    222,509.20/333,731.40 = 64,721.20/x
  3. Step 3: Cross multiply
    222,509.20x = 333,731.40 × 64,721.20
  4. Step 4: Simplify right side
    222,509.20x = 21,599,496,685.68
  5. Step 5: Solve for x
    x = 21,599,496,685.68/222,509.20
  6. Step 6: Final answer
    x = 97,072.38

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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.