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Finding the Fourth Proportional to 117,842.40, 176,763.60 and 61,660.80

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Solution

The fourth proportional to 117,842.40, 176,763.60 and 61,660.80 is: 92,491.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,842.40 : 176,763.60 = 61,660.80 : x
  2. Step 2: Convert to fraction form
    117,842.40/176,763.60 = 61,660.80/x
  3. Step 3: Cross multiply
    117,842.40x = 176,763.60 × 61,660.80
  4. Step 4: Simplify right side
    117,842.40x = 10,899,384,986.88
  5. Step 5: Solve for x
    x = 10,899,384,986.88/117,842.40
  6. Step 6: Final answer
    x = 92,491.20

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Why These Related Problems?

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