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Finding the Fourth Proportional to 221,209.48, 331,813.98 and 54,997.48

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Solution

The fourth proportional to 221,209.48, 331,813.98 and 54,997.48 is: 82,496.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,209.48 : 331,813.98 = 54,997.48 : x
  2. Step 2: Convert to fraction form
    221,209.48/331,813.98 = 54,997.48/x
  3. Step 3: Cross multiply
    221,209.48x = 331,813.98 × 54,997.48
  4. Step 4: Simplify right side
    221,209.48x = 18,248,932,728.77
  5. Step 5: Solve for x
    x = 18,248,932,728.77/221,209.48
  6. Step 6: Final answer
    x = 82,496.16

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1.5x scale

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.