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Finding the Fourth Proportional to 479,518.90, 661,734.72 and 264,657.43

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Solution

The fourth proportional to 479,518.90, 661,734.72 and 264,657.43 is: 365,226.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,518.90 : 661,734.72 = 264,657.43 : x
  2. Step 2: Convert to fraction form
    479,518.90/661,734.72 = 264,657.43/x
  3. Step 3: Cross multiply
    479,518.90x = 661,734.72 × 264,657.43
  4. Step 4: Simplify right side
    479,518.90x = 175,133,007,028.30
  5. Step 5: Solve for x
    x = 175,133,007,028.30/479,518.90
  6. Step 6: Final answer
    x = 365,226.49

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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.