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Finding the Fourth Proportional to 619,176.50, 853,672.55 and 400,999.66

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Solution

The fourth proportional to 619,176.50, 853,672.55 and 400,999.66 is: 552,867.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,176.50 : 853,672.55 = 400,999.66 : x
  2. Step 2: Convert to fraction form
    619,176.50/853,672.55 = 400,999.66/x
  3. Step 3: Cross multiply
    619,176.50x = 853,672.55 × 400,999.66
  4. Step 4: Simplify right side
    619,176.50x = 342,322,401,169.65
  5. Step 5: Solve for x
    x = 342,322,401,169.65/619,176.50
  6. Step 6: Final answer
    x = 552,867.24

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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.