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Finding the Fourth Proportional to 290,556.50, 400,989.84 and 177,401.12

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Solution

The fourth proportional to 290,556.50, 400,989.84 and 177,401.12 is: 244,826.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,556.50 : 400,989.84 = 177,401.12 : x
  2. Step 2: Convert to fraction form
    290,556.50/400,989.84 = 177,401.12/x
  3. Step 3: Cross multiply
    290,556.50x = 400,989.84 × 177,401.12
  4. Step 4: Simplify right side
    290,556.50x = 71,136,046,724.62
  5. Step 5: Solve for x
    x = 71,136,046,724.62/290,556.50
  6. Step 6: Final answer
    x = 244,826.90

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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.