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Finding the Fourth Proportional to 572,001.90, 858,002.85 and 439,550.70

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Solution

The fourth proportional to 572,001.90, 858,002.85 and 439,550.70 is: 659,326.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,001.90 : 858,002.85 = 439,550.70 : x
  2. Step 2: Convert to fraction form
    572,001.90/858,002.85 = 439,550.70/x
  3. Step 3: Cross multiply
    572,001.90x = 858,002.85 × 439,550.70
  4. Step 4: Simplify right side
    572,001.90x = 377,135,753,319.50
  5. Step 5: Solve for x
    x = 377,135,753,319.50/572,001.90
  6. Step 6: Final answer
    x = 659,326.05

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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.