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Finding the Fourth Proportional to 541,042.40, 746,185.44 and 405,394.88

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Solution

The fourth proportional to 541,042.40, 746,185.44 and 405,394.88 is: 559,105.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,042.40 : 746,185.44 = 405,394.88 : x
  2. Step 2: Convert to fraction form
    541,042.40/746,185.44 = 405,394.88/x
  3. Step 3: Cross multiply
    541,042.40x = 746,185.44 × 405,394.88
  4. Step 4: Simplify right side
    541,042.40x = 302,499,756,906.55
  5. Step 5: Solve for x
    x = 302,499,756,906.55/541,042.40
  6. Step 6: Final answer
    x = 559,105.45

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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.