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Finding the Fourth Proportional to 23,136.60, 34,696.80 and 12,039.60

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Solution

The fourth proportional to 23,136.60, 34,696.80 and 12,039.60 is: 18,055.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,136.60 : 34,696.80 = 12,039.60 : x
  2. Step 2: Convert to fraction form
    23,136.60/34,696.80 = 12,039.60/x
  3. Step 3: Cross multiply
    23,136.60x = 34,696.80 × 12,039.60
  4. Step 4: Simplify right side
    23,136.60x = 417,735,593.28
  5. Step 5: Solve for x
    x = 417,735,593.28/23,136.60
  6. Step 6: Final answer
    x = 18,055.19

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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.