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Finding the Fourth Proportional to 569,656.40, 853,318.20 and 289,331.60

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Solution

The fourth proportional to 569,656.40, 853,318.20 and 289,331.60 is: 433,404.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,656.40 : 853,318.20 = 289,331.60 : x
  2. Step 2: Convert to fraction form
    569,656.40/853,318.20 = 289,331.60/x
  3. Step 3: Cross multiply
    569,656.40x = 853,318.20 × 289,331.60
  4. Step 4: Simplify right side
    569,656.40x = 246,891,920,115.12
  5. Step 5: Solve for x
    x = 246,891,920,115.12/569,656.40
  6. Step 6: Final answer
    x = 433,404.98

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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.