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Finding the Fourth Proportional to 239,611.30, 359,355.44 and 71,091.76

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Solution

The fourth proportional to 239,611.30, 359,355.44 and 71,091.76 is: 106,619.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,611.30 : 359,355.44 = 71,091.76 : x
  2. Step 2: Convert to fraction form
    239,611.30/359,355.44 = 71,091.76/x
  3. Step 3: Cross multiply
    239,611.30x = 359,355.44 × 71,091.76
  4. Step 4: Simplify right side
    239,611.30x = 25,547,208,542.94
  5. Step 5: Solve for x
    x = 25,547,208,542.94/239,611.30
  6. Step 6: Final answer
    x = 106,619.38

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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.