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Finding the Fourth Proportional to 572,409.20, 858,613.80 and 404,447.60

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Solution

The fourth proportional to 572,409.20, 858,613.80 and 404,447.60 is: 606,671.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,409.20 : 858,613.80 = 404,447.60 : x
  2. Step 2: Convert to fraction form
    572,409.20/858,613.80 = 404,447.60/x
  3. Step 3: Cross multiply
    572,409.20x = 858,613.80 × 404,447.60
  4. Step 4: Simplify right side
    572,409.20x = 347,264,290,736.88
  5. Step 5: Solve for x
    x = 347,264,290,736.88/572,409.20
  6. Step 6: Final answer
    x = 606,671.40

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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.