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Finding the Fourth Proportional to 572,062.40, 858,093.60 and 439,611.20

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Solution

The fourth proportional to 572,062.40, 858,093.60 and 439,611.20 is: 659,416.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,062.40 : 858,093.60 = 439,611.20 : x
  2. Step 2: Convert to fraction form
    572,062.40/858,093.60 = 439,611.20/x
  3. Step 3: Cross multiply
    572,062.40x = 858,093.60 × 439,611.20
  4. Step 4: Simplify right side
    572,062.40x = 377,227,557,208.32
  5. Step 5: Solve for x
    x = 377,227,557,208.32/572,062.40
  6. Step 6: Final answer
    x = 659,416.80

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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.