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Finding the Fourth Proportional to 221,605.20, 332,353.80 and 63,817.20

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Solution

The fourth proportional to 221,605.20, 332,353.80 and 63,817.20 is: 95,710.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,605.20 : 332,353.80 = 63,817.20 : x
  2. Step 2: Convert to fraction form
    221,605.20/332,353.80 = 63,817.20/x
  3. Step 3: Cross multiply
    221,605.20x = 332,353.80 × 63,817.20
  4. Step 4: Simplify right side
    221,605.20x = 21,209,888,925.36
  5. Step 5: Solve for x
    x = 21,209,888,925.36/221,605.20
  6. Step 6: Final answer
    x = 95,710.25

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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.