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Finding the Fourth Proportional to 117,814.40, 176,721.60 and 61,632.80

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Solution

The fourth proportional to 117,814.40, 176,721.60 and 61,632.80 is: 92,449.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,814.40 : 176,721.60 = 61,632.80 : x
  2. Step 2: Convert to fraction form
    117,814.40/176,721.60 = 61,632.80/x
  3. Step 3: Cross multiply
    117,814.40x = 176,721.60 × 61,632.80
  4. Step 4: Simplify right side
    117,814.40x = 10,891,847,028.48
  5. Step 5: Solve for x
    x = 10,891,847,028.48/117,814.40
  6. Step 6: Final answer
    x = 92,449.20

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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.