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Finding the Fourth Proportional to 603,717.20, 905,575.80 and 436,411.70

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Solution

The fourth proportional to 603,717.20, 905,575.80 and 436,411.70 is: 654,617.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,717.20 : 905,575.80 = 436,411.70 : x
  2. Step 2: Convert to fraction form
    603,717.20/905,575.80 = 436,411.70/x
  3. Step 3: Cross multiply
    603,717.20x = 905,575.80 × 436,411.70
  4. Step 4: Simplify right side
    603,717.20x = 395,203,874,356.86
  5. Step 5: Solve for x
    x = 395,203,874,356.86/603,717.20
  6. Step 6: Final answer
    x = 654,617.55

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Similar ratio
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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.