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Finding the Fourth Proportional to 178,874.40, 246,870 and 115,396.77

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Solution

The fourth proportional to 178,874.40, 246,870 and 115,396.77 is: 159,262.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,874.40 : 246,870 = 115,396.77 : x
  2. Step 2: Convert to fraction form
    178,874.40/246,870 = 115,396.77/x
  3. Step 3: Cross multiply
    178,874.40x = 246,870 × 115,396.77
  4. Step 4: Simplify right side
    178,874.40x = 28,488,000,609.90
  5. Step 5: Solve for x
    x = 28,488,000,609.90/178,874.40
  6. Step 6: Final answer
    x = 159,262.59

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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.