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Finding the Fourth Proportional to 76,394.74, 114,590.31 and 45,003.88

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Solution

The fourth proportional to 76,394.74, 114,590.31 and 45,003.88 is: 67,504.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,394.74 : 114,590.31 = 45,003.88 : x
  2. Step 2: Convert to fraction form
    76,394.74/114,590.31 = 45,003.88/x
  3. Step 3: Cross multiply
    76,394.74x = 114,590.31 × 45,003.88
  4. Step 4: Simplify right side
    76,394.74x = 5,157,008,560.40
  5. Step 5: Solve for x
    x = 5,157,008,560.40/76,394.74
  6. Step 6: Final answer
    x = 67,504.76

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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.