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Finding the Fourth Proportional to 50,693.80, 69,959.28 and 28,033.78

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Solution

The fourth proportional to 50,693.80, 69,959.28 and 28,033.78 is: 38,687.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,693.80 : 69,959.28 = 28,033.78 : x
  2. Step 2: Convert to fraction form
    50,693.80/69,959.28 = 28,033.78/x
  3. Step 3: Cross multiply
    50,693.80x = 69,959.28 × 28,033.78
  4. Step 4: Simplify right side
    50,693.80x = 1,961,223,064.48
  5. Step 5: Solve for x
    x = 1,961,223,064.48/50,693.80
  6. Step 6: Final answer
    x = 38,687.63

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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.