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Finding the Fourth Proportional to 76,146.44, 105,078.24 and 41,690.24

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Solution

The fourth proportional to 76,146.44, 105,078.24 and 41,690.24 is: 57,530.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,146.44 : 105,078.24 = 41,690.24 : x
  2. Step 2: Convert to fraction form
    76,146.44/105,078.24 = 41,690.24/x
  3. Step 3: Cross multiply
    76,146.44x = 105,078.24 × 41,690.24
  4. Step 4: Simplify right side
    76,146.44x = 4,380,737,044.38
  5. Step 5: Solve for x
    x = 4,380,737,044.38/76,146.44
  6. Step 6: Final answer
    x = 57,530.42

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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.