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Finding the Fourth Proportional to 28,909.60, 43,323.90 and 22,996.60

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Solution

The fourth proportional to 28,909.60, 43,323.90 and 22,996.60 is: 34,462.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,909.60 : 43,323.90 = 22,996.60 : x
  2. Step 2: Convert to fraction form
    28,909.60/43,323.90 = 22,996.60/x
  3. Step 3: Cross multiply
    28,909.60x = 43,323.90 × 22,996.60
  4. Step 4: Simplify right side
    28,909.60x = 996,302,398.74
  5. Step 5: Solve for x
    x = 996,302,398.74/28,909.60
  6. Step 6: Final answer
    x = 34,462.68

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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.