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Finding the Fourth Proportional to 402,448.40, 603,672.60 and 106,960.40

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Solution

The fourth proportional to 402,448.40, 603,672.60 and 106,960.40 is: 160,440.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,448.40 : 603,672.60 = 106,960.40 : x
  2. Step 2: Convert to fraction form
    402,448.40/603,672.60 = 106,960.40/x
  3. Step 3: Cross multiply
    402,448.40x = 603,672.60 × 106,960.40
  4. Step 4: Simplify right side
    402,448.40x = 64,569,062,765.04
  5. Step 5: Solve for x
    x = 64,569,062,765.04/402,448.40
  6. Step 6: Final answer
    x = 160,440.60

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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.