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Finding the Fourth Proportional to 239,611.76, 330,663.30 and 132,188.48

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Solution

The fourth proportional to 239,611.76, 330,663.30 and 132,188.48 is: 182,419.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,611.76 : 330,663.30 = 132,188.48 : x
  2. Step 2: Convert to fraction form
    239,611.76/330,663.30 = 132,188.48/x
  3. Step 3: Cross multiply
    239,611.76x = 330,663.30 × 132,188.48
  4. Step 4: Simplify right side
    239,611.76x = 43,709,879,018.78
  5. Step 5: Solve for x
    x = 43,709,879,018.78/239,611.76
  6. Step 6: Final answer
    x = 182,419.59

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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.