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Finding the Fourth Proportional to 57,118.73, 78,840.93 and 36,976.97

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Solution

The fourth proportional to 57,118.73, 78,840.93 and 36,976.97 is: 51,039.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,118.73 : 78,840.93 = 36,976.97 : x
  2. Step 2: Convert to fraction form
    57,118.73/78,840.93 = 36,976.97/x
  3. Step 3: Cross multiply
    57,118.73x = 78,840.93 × 36,976.97
  4. Step 4: Simplify right side
    57,118.73x = 2,915,298,752.66
  5. Step 5: Solve for x
    x = 2,915,298,752.66/57,118.73
  6. Step 6: Final answer
    x = 51,039.28

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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.