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Finding the Fourth Proportional to 404,361.74, 606,478.19 and 134,467.40

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Solution

The fourth proportional to 404,361.74, 606,478.19 and 134,467.40 is: 201,679.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,361.74 : 606,478.19 = 134,467.40 : x
  2. Step 2: Convert to fraction form
    404,361.74/606,478.19 = 134,467.40/x
  3. Step 3: Cross multiply
    404,361.74x = 606,478.19 × 134,467.40
  4. Step 4: Simplify right side
    404,361.74x = 81,551,541,661.28
  5. Step 5: Solve for x
    x = 81,551,541,661.28/404,361.74
  6. Step 6: Final answer
    x = 201,679.67

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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.