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Finding the Fourth Proportional to 445,361.25, 668,400.30 and 253,353.59

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Solution

The fourth proportional to 445,361.25, 668,400.30 and 253,353.59 is: 380,234.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,361.25 : 668,400.30 = 253,353.59 : x
  2. Step 2: Convert to fraction form
    445,361.25/668,400.30 = 253,353.59/x
  3. Step 3: Cross multiply
    445,361.25x = 668,400.30 × 253,353.59
  4. Step 4: Simplify right side
    445,361.25x = 169,341,612,220.08
  5. Step 5: Solve for x
    x = 169,341,612,220.08/445,361.25
  6. Step 6: Final answer
    x = 380,234.28

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1.5x scale

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.