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Finding the Fourth Proportional to 72,964.94, 100,690.24 and 41,133.86

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Solution

The fourth proportional to 72,964.94, 100,690.24 and 41,133.86 is: 56,763.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,964.94 : 100,690.24 = 41,133.86 : x
  2. Step 2: Convert to fraction form
    72,964.94/100,690.24 = 41,133.86/x
  3. Step 3: Cross multiply
    72,964.94x = 100,690.24 × 41,133.86
  4. Step 4: Simplify right side
    72,964.94x = 4,141,778,235.53
  5. Step 5: Solve for x
    x = 4,141,778,235.53/72,964.94
  6. Step 6: Final answer
    x = 56,763.95

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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.