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Finding the Fourth Proportional to 40,668.80, 60,916.80 and 25,116.80

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Solution

The fourth proportional to 40,668.80, 60,916.80 and 25,116.80 is: 37,621.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,668.80 : 60,916.80 = 25,116.80 : x
  2. Step 2: Convert to fraction form
    40,668.80/60,916.80 = 25,116.80/x
  3. Step 3: Cross multiply
    40,668.80x = 60,916.80 × 25,116.80
  4. Step 4: Simplify right side
    40,668.80x = 1,530,035,082.24
  5. Step 5: Solve for x
    x = 1,530,035,082.24/40,668.80
  6. Step 6: Final answer
    x = 37,621.84

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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.