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Finding the Fourth Proportional to 606,919.20, 910,378.80 and 291,213.60

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Solution

The fourth proportional to 606,919.20, 910,378.80 and 291,213.60 is: 436,820.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,919.20 : 910,378.80 = 291,213.60 : x
  2. Step 2: Convert to fraction form
    606,919.20/910,378.80 = 291,213.60/x
  3. Step 3: Cross multiply
    606,919.20x = 910,378.80 × 291,213.60
  4. Step 4: Simplify right side
    606,919.20x = 265,114,687,711.68
  5. Step 5: Solve for x
    x = 265,114,687,711.68/606,919.20
  6. Step 6: Final answer
    x = 436,820.40

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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.