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Finding the Fourth Proportional to 50,691.86, 69,951.94 and 28,029.48

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Solution

The fourth proportional to 50,691.86, 69,951.94 and 28,029.48 is: 38,679.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,691.86 : 69,951.94 = 28,029.48 : x
  2. Step 2: Convert to fraction form
    50,691.86/69,951.94 = 28,029.48/x
  3. Step 3: Cross multiply
    50,691.86x = 69,951.94 × 28,029.48
  4. Step 4: Simplify right side
    50,691.86x = 1,960,716,503.19
  5. Step 5: Solve for x
    x = 1,960,716,503.19/50,691.86
  6. Step 6: Final answer
    x = 38,679.12

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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.