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Finding the Fourth Proportional to 79,615.98, 109,871.64 and 43,808.04

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Solution

The fourth proportional to 79,615.98, 109,871.64 and 43,808.04 is: 60,455.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,615.98 : 109,871.64 = 43,808.04 : x
  2. Step 2: Convert to fraction form
    79,615.98/109,871.64 = 43,808.04/x
  3. Step 3: Cross multiply
    79,615.98x = 109,871.64 × 43,808.04
  4. Step 4: Simplify right side
    79,615.98x = 4,813,261,199.99
  5. Step 5: Solve for x
    x = 4,813,261,199.99/79,615.98
  6. Step 6: Final answer
    x = 60,455.97

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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.