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Finding the Fourth Proportional to 50,983.99, 70,369.15 and 28,330.76

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Solution

The fourth proportional to 50,983.99, 70,369.15 and 28,330.76 is: 39,102.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,983.99 : 70,369.15 = 28,330.76 : x
  2. Step 2: Convert to fraction form
    50,983.99/70,369.15 = 28,330.76/x
  3. Step 3: Cross multiply
    50,983.99x = 70,369.15 × 28,330.76
  4. Step 4: Simplify right side
    50,983.99x = 1,993,611,500.05
  5. Step 5: Solve for x
    x = 1,993,611,500.05/50,983.99
  6. Step 6: Final answer
    x = 39,102.70

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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.