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Finding the Fourth Proportional to 616,696.78, 851,183.76 and 401,461.96

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Solution

The fourth proportional to 616,696.78, 851,183.76 and 401,461.96 is: 554,110.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,696.78 : 851,183.76 = 401,461.96 : x
  2. Step 2: Convert to fraction form
    616,696.78/851,183.76 = 401,461.96/x
  3. Step 3: Cross multiply
    616,696.78x = 851,183.76 × 401,461.96
  4. Step 4: Simplify right side
    616,696.78x = 341,717,900,609.77
  5. Step 5: Solve for x
    x = 341,717,900,609.77/616,696.78
  6. Step 6: Final answer
    x = 554,110.08

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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.