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Finding the Fourth Proportional to 476,980.80, 715,471.20 and 122,022.60

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Solution

The fourth proportional to 476,980.80, 715,471.20 and 122,022.60 is: 183,033.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,980.80 : 715,471.20 = 122,022.60 : x
  2. Step 2: Convert to fraction form
    476,980.80/715,471.20 = 122,022.60/x
  3. Step 3: Cross multiply
    476,980.80x = 715,471.20 × 122,022.60
  4. Step 4: Simplify right side
    476,980.80x = 87,303,656,049.12
  5. Step 5: Solve for x
    x = 87,303,656,049.12/476,980.80
  6. Step 6: Final answer
    x = 183,033.90

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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.