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Finding the Fourth Proportional to 221,302.37, 331,783.40 and 114,571.91

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Solution

The fourth proportional to 221,302.37, 331,783.40 and 114,571.91 is: 171,769.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,302.37 : 331,783.40 = 114,571.91 : x
  2. Step 2: Convert to fraction form
    221,302.37/331,783.40 = 114,571.91/x
  3. Step 3: Cross multiply
    221,302.37x = 331,783.40 × 114,571.91
  4. Step 4: Simplify right side
    221,302.37x = 38,013,056,471.81
  5. Step 5: Solve for x
    x = 38,013,056,471.81/221,302.37
  6. Step 6: Final answer
    x = 171,769.77

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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.