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Finding the Fourth Proportional to 603,335.20, 905,199.64 and 287,751.12

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Solution

The fourth proportional to 603,335.20, 905,199.64 and 287,751.12 is: 431,720.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,335.20 : 905,199.64 = 287,751.12 : x
  2. Step 2: Convert to fraction form
    603,335.20/905,199.64 = 287,751.12/x
  3. Step 3: Cross multiply
    603,335.20x = 905,199.64 × 287,751.12
  4. Step 4: Simplify right side
    603,335.20x = 260,472,210,233.60
  5. Step 5: Solve for x
    x = 260,472,210,233.60/603,335.20
  6. Step 6: Final answer
    x = 431,720.56

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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.