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Finding the Fourth Proportional to 50,860, 70,190.64 and 28,505.44

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Solution

The fourth proportional to 50,860, 70,190.64 and 28,505.44 is: 39,339.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,860 : 70,190.64 = 28,505.44 : x
  2. Step 2: Convert to fraction form
    50,860/70,190.64 = 28,505.44/x
  3. Step 3: Cross multiply
    50,860x = 70,190.64 × 28,505.44
  4. Step 4: Simplify right side
    50,860x = 2,000,815,077.08
  5. Step 5: Solve for x
    x = 2,000,815,077.08/50,860
  6. Step 6: Final answer
    x = 39,339.66

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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.