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Finding the Fourth Proportional to 57,476.93, 79,318.15 and 31,984.94

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Solution

The fourth proportional to 57,476.93, 79,318.15 and 31,984.94 is: 44,139.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,476.93 : 79,318.15 = 31,984.94 : x
  2. Step 2: Convert to fraction form
    57,476.93/79,318.15 = 31,984.94/x
  3. Step 3: Cross multiply
    57,476.93x = 79,318.15 × 31,984.94
  4. Step 4: Simplify right side
    57,476.93x = 2,536,986,268.66
  5. Step 5: Solve for x
    x = 2,536,986,268.66/57,476.93
  6. Step 6: Final answer
    x = 44,139.21

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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.