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Finding the Fourth Proportional to 221,940.18, 332,811.45 and 64,131.12

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Solution

The fourth proportional to 221,940.18, 332,811.45 and 64,131.12 is: 96,168.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,940.18 : 332,811.45 = 64,131.12 : x
  2. Step 2: Convert to fraction form
    221,940.18/332,811.45 = 64,131.12/x
  3. Step 3: Cross multiply
    221,940.18x = 332,811.45 × 64,131.12
  4. Step 4: Simplify right side
    221,940.18x = 21,343,571,037.32
  5. Step 5: Solve for x
    x = 21,343,571,037.32/221,940.18
  6. Step 6: Final answer
    x = 96,168.13

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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.