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Finding the Fourth Proportional to 445,444.90, 668,167.35 and 419,200.90

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Solution

The fourth proportional to 445,444.90, 668,167.35 and 419,200.90 is: 628,801.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,444.90 : 668,167.35 = 419,200.90 : x
  2. Step 2: Convert to fraction form
    445,444.90/668,167.35 = 419,200.90/x
  3. Step 3: Cross multiply
    445,444.90x = 668,167.35 × 419,200.90
  4. Step 4: Simplify right side
    445,444.90x = 280,096,354,470.62
  5. Step 5: Solve for x
    x = 280,096,354,470.62/445,444.90
  6. Step 6: Final answer
    x = 628,801.35

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Similar ratio
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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.