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Finding the Fourth Proportional to 206,851.10, 310,313.10 and 73,808.60

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Solution

The fourth proportional to 206,851.10, 310,313.10 and 73,808.60 is: 110,725.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,851.10 : 310,313.10 = 73,808.60 : x
  2. Step 2: Convert to fraction form
    206,851.10/310,313.10 = 73,808.60/x
  3. Step 3: Cross multiply
    206,851.10x = 310,313.10 × 73,808.60
  4. Step 4: Simplify right side
    206,851.10x = 22,903,775,472.66
  5. Step 5: Solve for x
    x = 22,903,775,472.66/206,851.10
  6. Step 6: Final answer
    x = 110,725.91

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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.