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Finding the Fourth Proportional to 534,796.85, 738,020.29 and 289,781.43

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Solution

The fourth proportional to 534,796.85, 738,020.29 and 289,781.43 is: 399,898.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,796.85 : 738,020.29 = 289,781.43 : x
  2. Step 2: Convert to fraction form
    534,796.85/738,020.29 = 289,781.43/x
  3. Step 3: Cross multiply
    534,796.85x = 738,020.29 × 289,781.43
  4. Step 4: Simplify right side
    534,796.85x = 213,864,575,005.22
  5. Step 5: Solve for x
    x = 213,864,575,005.22/534,796.85
  6. Step 6: Final answer
    x = 399,898.72

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1.5x scale

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.