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Finding the Fourth Proportional to 114,423.20, 171,634.80 and 79,431.20

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Solution

The fourth proportional to 114,423.20, 171,634.80 and 79,431.20 is: 119,146.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,423.20 : 171,634.80 = 79,431.20 : x
  2. Step 2: Convert to fraction form
    114,423.20/171,634.80 = 79,431.20/x
  3. Step 3: Cross multiply
    114,423.20x = 171,634.80 × 79,431.20
  4. Step 4: Simplify right side
    114,423.20x = 13,633,158,125.76
  5. Step 5: Solve for x
    x = 13,633,158,125.76/114,423.20
  6. Step 6: Final answer
    x = 119,146.80

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.