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Finding the Fourth Proportional to 221,692.16, 332,490.72 and 63,891.20

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Solution

The fourth proportional to 221,692.16, 332,490.72 and 63,891.20 is: 95,823.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,692.16 : 332,490.72 = 63,891.20 : x
  2. Step 2: Convert to fraction form
    221,692.16/332,490.72 = 63,891.20/x
  3. Step 3: Cross multiply
    221,692.16x = 332,490.72 × 63,891.20
  4. Step 4: Simplify right side
    221,692.16x = 21,243,231,089.66
  5. Step 5: Solve for x
    x = 21,243,231,089.66/221,692.16
  6. Step 6: Final answer
    x = 95,823.10

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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.