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Finding the Fourth Proportional to 57,640.01, 79,539.71 and 31,797.63

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Solution

The fourth proportional to 57,640.01, 79,539.71 and 31,797.63 is: 43,878.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,640.01 : 79,539.71 = 31,797.63 : x
  2. Step 2: Convert to fraction form
    57,640.01/79,539.71 = 31,797.63/x
  3. Step 3: Cross multiply
    57,640.01x = 79,539.71 × 31,797.63
  4. Step 4: Simplify right side
    57,640.01x = 2,529,174,109.90
  5. Step 5: Solve for x
    x = 2,529,174,109.90/57,640.01
  6. Step 6: Final answer
    x = 43,878.80

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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.