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Finding the Fourth Proportional to 621,583.48, 857,861.10 and 349,662.82

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Solution

The fourth proportional to 621,583.48, 857,861.10 and 349,662.82 is: 482,577.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,583.48 : 857,861.10 = 349,662.82 : x
  2. Step 2: Convert to fraction form
    621,583.48/857,861.10 = 349,662.82/x
  3. Step 3: Cross multiply
    621,583.48x = 857,861.10 × 349,662.82
  4. Step 4: Simplify right side
    621,583.48x = 299,962,131,394.30
  5. Step 5: Solve for x
    x = 299,962,131,394.30/621,583.48
  6. Step 6: Final answer
    x = 482,577.39

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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.