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Finding the Fourth Proportional to 76,601.58, 105,711.12 and 43,067.58

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Solution

The fourth proportional to 76,601.58, 105,711.12 and 43,067.58 is: 59,433.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,601.58 : 105,711.12 = 43,067.58 : x
  2. Step 2: Convert to fraction form
    76,601.58/105,711.12 = 43,067.58/x
  3. Step 3: Cross multiply
    76,601.58x = 105,711.12 × 43,067.58
  4. Step 4: Simplify right side
    76,601.58x = 4,552,722,117.49
  5. Step 5: Solve for x
    x = 4,552,722,117.49/76,601.58
  6. Step 6: Final answer
    x = 59,433.79

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1.5x scale

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.