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Finding the Fourth Proportional to 305,668.60, 458,568.42 and 92,418.28

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Solution

The fourth proportional to 305,668.60, 458,568.42 and 92,418.28 is: 138,647.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,668.60 : 458,568.42 = 92,418.28 : x
  2. Step 2: Convert to fraction form
    305,668.60/458,568.42 = 92,418.28/x
  3. Step 3: Cross multiply
    305,668.60x = 458,568.42 × 92,418.28
  4. Step 4: Simplify right side
    305,668.60x = 42,380,104,638.72
  5. Step 5: Solve for x
    x = 42,380,104,638.72/305,668.60
  6. Step 6: Final answer
    x = 138,647.23

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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.