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Finding the Fourth Proportional to 211,150.54, 316,736.70 and 53,380.36

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Solution

The fourth proportional to 211,150.54, 316,736.70 and 53,380.36 is: 80,073.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,150.54 : 316,736.70 = 53,380.36 : x
  2. Step 2: Convert to fraction form
    211,150.54/316,736.70 = 53,380.36/x
  3. Step 3: Cross multiply
    211,150.54x = 316,736.70 × 53,380.36
  4. Step 4: Simplify right side
    211,150.54x = 16,907,519,071.21
  5. Step 5: Solve for x
    x = 16,907,519,071.21/211,150.54
  6. Step 6: Final answer
    x = 80,073.29

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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.