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Finding the Fourth Proportional to 636,187.78, 954,079.19 and 209,644.01

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Solution

The fourth proportional to 636,187.78, 954,079.19 and 209,644.01 is: 314,399.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,187.78 : 954,079.19 = 209,644.01 : x
  2. Step 2: Convert to fraction form
    636,187.78/954,079.19 = 209,644.01/x
  3. Step 3: Cross multiply
    636,187.78x = 954,079.19 × 209,644.01
  4. Step 4: Simplify right side
    636,187.78x = 200,016,985,794.50
  5. Step 5: Solve for x
    x = 200,016,985,794.50/636,187.78
  6. Step 6: Final answer
    x = 314,399.29

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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.