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Finding the Fourth Proportional to 413,819.80, 620,729.70 and 411,195.40

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Solution

The fourth proportional to 413,819.80, 620,729.70 and 411,195.40 is: 616,793.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,819.80 : 620,729.70 = 411,195.40 : x
  2. Step 2: Convert to fraction form
    413,819.80/620,729.70 = 411,195.40/x
  3. Step 3: Cross multiply
    413,819.80x = 620,729.70 × 411,195.40
  4. Step 4: Simplify right side
    413,819.80x = 255,241,197,283.38
  5. Step 5: Solve for x
    x = 255,241,197,283.38/413,819.80
  6. Step 6: Final answer
    x = 616,793.10

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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.