Home / 415,909.73-623,975.12-131,605.33

Finding the Fourth Proportional to 415,909.73, 623,975.12 and 131,605.33

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Solution

The fourth proportional to 415,909.73, 623,975.12 and 131,605.33 is: 197,442.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,909.73 : 623,975.12 = 131,605.33 : x
  2. Step 2: Convert to fraction form
    415,909.73/623,975.12 = 131,605.33/x
  3. Step 3: Cross multiply
    415,909.73x = 623,975.12 × 131,605.33
  4. Step 4: Simplify right side
    415,909.73x = 82,118,450,921.36
  5. Step 5: Solve for x
    x = 82,118,450,921.36/415,909.73
  6. Step 6: Final answer
    x = 197,442.97

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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.