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Finding the Fourth Proportional to 178,888.92, 246,890.12 and 115,411.36

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Solution

The fourth proportional to 178,888.92, 246,890.12 and 115,411.36 is: 159,282.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,888.92 : 246,890.12 = 115,411.36 : x
  2. Step 2: Convert to fraction form
    178,888.92/246,890.12 = 115,411.36/x
  3. Step 3: Cross multiply
    178,888.92x = 246,890.12 × 115,411.36
  4. Step 4: Simplify right side
    178,888.92x = 28,493,924,519.76
  5. Step 5: Solve for x
    x = 28,493,924,519.76/178,888.92
  6. Step 6: Final answer
    x = 159,282.78

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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.