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Finding the Fourth Proportional to 572,403.60, 858,605.40 and 572,403.60

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Solution

The fourth proportional to 572,403.60, 858,605.40 and 572,403.60 is: 858,605.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,403.60 : 858,605.40 = 572,403.60 : x
  2. Step 2: Convert to fraction form
    572,403.60/858,605.40 = 572,403.60/x
  3. Step 3: Cross multiply
    572,403.60x = 858,605.40 × 572,403.60
  4. Step 4: Simplify right side
    572,403.60x = 491,468,821,939.44
  5. Step 5: Solve for x
    x = 491,468,821,939.44/572,403.60
  6. Step 6: Final answer
    x = 858,605.40

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Double scale
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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.