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Finding the Fourth Proportional to 591,079.38, 886,743.62 and 191,689

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Solution

The fourth proportional to 591,079.38, 886,743.62 and 191,689 is: 287,573.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,079.38 : 886,743.62 = 191,689 : x
  2. Step 2: Convert to fraction form
    591,079.38/886,743.62 = 191,689/x
  3. Step 3: Cross multiply
    591,079.38x = 886,743.62 × 191,689
  4. Step 4: Simplify right side
    591,079.38x = 169,978,997,774.18
  5. Step 5: Solve for x
    x = 169,978,997,774.18/591,079.38
  6. Step 6: Final answer
    x = 287,573.89

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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.