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Finding the Fourth Proportional to 404,659.40, 606,920.92 and 148,439.12

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Solution

The fourth proportional to 404,659.40, 606,920.92 and 148,439.12 is: 222,633.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,659.40 : 606,920.92 = 148,439.12 : x
  2. Step 2: Convert to fraction form
    404,659.40/606,920.92 = 148,439.12/x
  3. Step 3: Cross multiply
    404,659.40x = 606,920.92 × 148,439.12
  4. Step 4: Simplify right side
    404,659.40x = 90,090,807,274.39
  5. Step 5: Solve for x
    x = 90,090,807,274.39/404,659.40
  6. Step 6: Final answer
    x = 222,633.67

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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.