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Finding the Fourth Proportional to 79,806.19, 110,129.71 and 43,506.89

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Solution

The fourth proportional to 79,806.19, 110,129.71 and 43,506.89 is: 60,037.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,806.19 : 110,129.71 = 43,506.89 : x
  2. Step 2: Convert to fraction form
    79,806.19/110,129.71 = 43,506.89/x
  3. Step 3: Cross multiply
    79,806.19x = 110,129.71 × 43,506.89
  4. Step 4: Simplify right side
    79,806.19x = 4,791,401,178.70
  5. Step 5: Solve for x
    x = 4,791,401,178.70/79,806.19
  6. Step 6: Final answer
    x = 60,037.96

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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.