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Finding the Fourth Proportional to 221,701.56, 305,972.55 and 126,192.84

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Solution

The fourth proportional to 221,701.56, 305,972.55 and 126,192.84 is: 174,160.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,701.56 : 305,972.55 = 126,192.84 : x
  2. Step 2: Convert to fraction form
    221,701.56/305,972.55 = 126,192.84/x
  3. Step 3: Cross multiply
    221,701.56x = 305,972.55 × 126,192.84
  4. Step 4: Simplify right side
    221,701.56x = 38,611,545,046.54
  5. Step 5: Solve for x
    x = 38,611,545,046.54/221,701.56
  6. Step 6: Final answer
    x = 174,160.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.