Home / 415,582.25-623,408.70-131,196.71

Finding the Fourth Proportional to 415,582.25, 623,408.70 and 131,196.71

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Solution

The fourth proportional to 415,582.25, 623,408.70 and 131,196.71 is: 196,806.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,582.25 : 623,408.70 = 131,196.71 : x
  2. Step 2: Convert to fraction form
    415,582.25/623,408.70 = 131,196.71/x
  3. Step 3: Cross multiply
    415,582.25x = 623,408.70 × 131,196.71
  4. Step 4: Simplify right side
    415,582.25x = 81,789,172,475.89
  5. Step 5: Solve for x
    x = 81,789,172,475.89/415,582.25
  6. Step 6: Final answer
    x = 196,806.22

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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.