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Finding the Fourth Proportional to 39,154.80, 58,735.80 and 11,074.80

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Solution

The fourth proportional to 39,154.80, 58,735.80 and 11,074.80 is: 16,613.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,154.80 : 58,735.80 = 11,074.80 : x
  2. Step 2: Convert to fraction form
    39,154.80/58,735.80 = 11,074.80/x
  3. Step 3: Cross multiply
    39,154.80x = 58,735.80 × 11,074.80
  4. Step 4: Simplify right side
    39,154.80x = 650,487,237.84
  5. Step 5: Solve for x
    x = 650,487,237.84/39,154.80
  6. Step 6: Final answer
    x = 16,613.22

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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.