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Finding the Fourth Proportional to 67,243.85, 92,709.80 and 55,099.18

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Solution

The fourth proportional to 67,243.85, 92,709.80 and 55,099.18 is: 75,965.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,243.85 : 92,709.80 = 55,099.18 : x
  2. Step 2: Convert to fraction form
    67,243.85/92,709.80 = 55,099.18/x
  3. Step 3: Cross multiply
    67,243.85x = 92,709.80 × 55,099.18
  4. Step 4: Simplify right side
    67,243.85x = 5,108,233,682.47
  5. Step 5: Solve for x
    x = 5,108,233,682.47/67,243.85
  6. Step 6: Final answer
    x = 75,965.81

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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.