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Finding the Fourth Proportional to 543,861.70, 814,045.66 and 290,508.68

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Solution

The fourth proportional to 543,861.70, 814,045.66 and 290,508.68 is: 434,829.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,861.70 : 814,045.66 = 290,508.68 : x
  2. Step 2: Convert to fraction form
    543,861.70/814,045.66 = 290,508.68/x
  3. Step 3: Cross multiply
    543,861.70x = 814,045.66 × 290,508.68
  4. Step 4: Simplify right side
    543,861.70x = 236,487,330,146.33
  5. Step 5: Solve for x
    x = 236,487,330,146.33/543,861.70
  6. Step 6: Final answer
    x = 434,829.90

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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.