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Finding the Fourth Proportional to 31,807.92, 43,893.60 and 17,659.92

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Solution

The fourth proportional to 31,807.92, 43,893.60 and 17,659.92 is: 24,369.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,807.92 : 43,893.60 = 17,659.92 : x
  2. Step 2: Convert to fraction form
    31,807.92/43,893.60 = 17,659.92/x
  3. Step 3: Cross multiply
    31,807.92x = 43,893.60 × 17,659.92
  4. Step 4: Simplify right side
    31,807.92x = 775,157,464.51
  5. Step 5: Solve for x
    x = 775,157,464.51/31,807.92
  6. Step 6: Final answer
    x = 24,369.95

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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.