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Finding the Fourth Proportional to 404,651.40, 606,908.92 and 148,431.12

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Solution

The fourth proportional to 404,651.40, 606,908.92 and 148,431.12 is: 222,621.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,651.40 : 606,908.92 = 148,431.12 : x
  2. Step 2: Convert to fraction form
    404,651.40/606,908.92 = 148,431.12/x
  3. Step 3: Cross multiply
    404,651.40x = 606,908.92 × 148,431.12
  4. Step 4: Simplify right side
    404,651.40x = 90,084,170,733.59
  5. Step 5: Solve for x
    x = 90,084,170,733.59/404,651.40
  6. Step 6: Final answer
    x = 222,621.67

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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.