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Finding the Fourth Proportional to 67,447.65, 92,991.29 and 55,303.43

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Solution

The fourth proportional to 67,447.65, 92,991.29 and 55,303.43 is: 76,247.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,447.65 : 92,991.29 = 55,303.43 : x
  2. Step 2: Convert to fraction form
    67,447.65/92,991.29 = 55,303.43/x
  3. Step 3: Cross multiply
    67,447.65x = 92,991.29 × 55,303.43
  4. Step 4: Simplify right side
    67,447.65x = 5,142,736,866.73
  5. Step 5: Solve for x
    x = 5,142,736,866.73/67,447.65
  6. Step 6: Final answer
    x = 76,247.82

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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.