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Finding the Fourth Proportional to 24,483.60, 36,696.60 and 12,790.80

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Solution

The fourth proportional to 24,483.60, 36,696.60 and 12,790.80 is: 19,171.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    24,483.60 : 36,696.60 = 12,790.80 : x
  2. Step 2: Convert to fraction form
    24,483.60/36,696.60 = 12,790.80/x
  3. Step 3: Cross multiply
    24,483.60x = 36,696.60 × 12,790.80
  4. Step 4: Simplify right side
    24,483.60x = 469,378,871.28
  5. Step 5: Solve for x
    x = 469,378,871.28/24,483.60
  6. Step 6: Final answer
    x = 19,171.15

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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.