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Finding the Fourth Proportional to 43,503.75, 65,255.90 and 15,424.47

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Solution

The fourth proportional to 43,503.75, 65,255.90 and 15,424.47 is: 23,136.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,503.75 : 65,255.90 = 15,424.47 : x
  2. Step 2: Convert to fraction form
    43,503.75/65,255.90 = 15,424.47/x
  3. Step 3: Cross multiply
    43,503.75x = 65,255.90 × 15,424.47
  4. Step 4: Simplify right side
    43,503.75x = 1,006,537,594.75
  5. Step 5: Solve for x
    x = 1,006,537,594.75/43,503.75
  6. Step 6: Final answer
    x = 23,136.80

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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.