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Finding the Fourth Proportional to 79,513.01, 109,726.08 and 43,213.60

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Solution

The fourth proportional to 79,513.01, 109,726.08 and 43,213.60 is: 59,633.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,513.01 : 109,726.08 = 43,213.60 : x
  2. Step 2: Convert to fraction form
    79,513.01/109,726.08 = 43,213.60/x
  3. Step 3: Cross multiply
    79,513.01x = 109,726.08 × 43,213.60
  4. Step 4: Simplify right side
    79,513.01x = 4,741,658,818.42
  5. Step 5: Solve for x
    x = 4,741,658,818.42/79,513.01
  6. Step 6: Final answer
    x = 59,633.75

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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.