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Finding the Fourth Proportional to 221,405.20, 332,053.80 and 63,617.20

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Solution

The fourth proportional to 221,405.20, 332,053.80 and 63,617.20 is: 95,410.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,405.20 : 332,053.80 = 63,617.20 : x
  2. Step 2: Convert to fraction form
    221,405.20/332,053.80 = 63,617.20/x
  3. Step 3: Cross multiply
    221,405.20x = 332,053.80 × 63,617.20
  4. Step 4: Simplify right side
    221,405.20x = 21,124,333,005.36
  5. Step 5: Solve for x
    x = 21,124,333,005.36/221,405.20
  6. Step 6: Final answer
    x = 95,410.28

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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.