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Finding the Fourth Proportional to 49,953, 68,937.12 and 28,732.24

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Solution

The fourth proportional to 49,953, 68,937.12 and 28,732.24 is: 39,651.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,953 : 68,937.12 = 28,732.24 : x
  2. Step 2: Convert to fraction form
    49,953/68,937.12 = 28,732.24/x
  3. Step 3: Cross multiply
    49,953x = 68,937.12 × 28,732.24
  4. Step 4: Simplify right side
    49,953x = 1,980,717,876.75
  5. Step 5: Solve for x
    x = 1,980,717,876.75/49,953
  6. Step 6: Final answer
    x = 39,651.63

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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.