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Finding the Fourth Proportional to 68,585.90, 94,668.46 and 39,912.26

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Solution

The fourth proportional to 68,585.90, 94,668.46 and 39,912.26 is: 55,090.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,585.90 : 94,668.46 = 39,912.26 : x
  2. Step 2: Convert to fraction form
    68,585.90/94,668.46 = 39,912.26/x
  3. Step 3: Cross multiply
    68,585.90x = 94,668.46 × 39,912.26
  4. Step 4: Simplify right side
    68,585.90x = 3,778,431,616.20
  5. Step 5: Solve for x
    x = 3,778,431,616.20/68,585.90
  6. Step 6: Final answer
    x = 55,090.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.