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Finding the Fourth Proportional to 119,435.64, 179,192.34 and 57,111

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Solution

The fourth proportional to 119,435.64, 179,192.34 and 57,111 is: 85,685.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,435.64 : 179,192.34 = 57,111 : x
  2. Step 2: Convert to fraction form
    119,435.64/179,192.34 = 57,111/x
  3. Step 3: Cross multiply
    119,435.64x = 179,192.34 × 57,111
  4. Step 4: Simplify right side
    119,435.64x = 10,233,853,729.74
  5. Step 5: Solve for x
    x = 10,233,853,729.74/119,435.64
  6. Step 6: Final answer
    x = 85,685.09

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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.