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Finding the Fourth Proportional to 76,964.76, 106,255.56 and 58,671.90

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Solution

The fourth proportional to 76,964.76, 106,255.56 and 58,671.90 is: 81,000.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,964.76 : 106,255.56 = 58,671.90 : x
  2. Step 2: Convert to fraction form
    76,964.76/106,255.56 = 58,671.90/x
  3. Step 3: Cross multiply
    76,964.76x = 106,255.56 × 58,671.90
  4. Step 4: Simplify right side
    76,964.76x = 6,234,215,590.76
  5. Step 5: Solve for x
    x = 6,234,215,590.76/76,964.76
  6. Step 6: Final answer
    x = 81,000.91

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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.