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Finding the Fourth Proportional to 119,168.90, 178,777.86 and 34,931.78

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Solution

The fourth proportional to 119,168.90, 178,777.86 and 34,931.78 is: 52,404.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,168.90 : 178,777.86 = 34,931.78 : x
  2. Step 2: Convert to fraction form
    119,168.90/178,777.86 = 34,931.78/x
  3. Step 3: Cross multiply
    119,168.90x = 178,777.86 × 34,931.78
  4. Step 4: Simplify right side
    119,168.90x = 6,245,028,874.39
  5. Step 5: Solve for x
    x = 6,245,028,874.39/119,168.90
  6. Step 6: Final answer
    x = 52,404.85

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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.