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Finding the Fourth Proportional to 361,814.18, 499,223.72 and 208,819.89

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Solution

The fourth proportional to 361,814.18, 499,223.72 and 208,819.89 is: 288,125.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,814.18 : 499,223.72 = 208,819.89 : x
  2. Step 2: Convert to fraction form
    361,814.18/499,223.72 = 208,819.89/x
  3. Step 3: Cross multiply
    361,814.18x = 499,223.72 × 208,819.89
  4. Step 4: Simplify right side
    361,814.18x = 104,247,842,817.84
  5. Step 5: Solve for x
    x = 104,247,842,817.84/361,814.18
  6. Step 6: Final answer
    x = 288,125.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.