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Finding the Fourth Proportional to 6,662,709.78, 9,194,560.20 and 3,606,916.74

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Solution

The fourth proportional to 6,662,709.78, 9,194,560.20 and 3,606,916.74 is: 4,977,556.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,662,709.78 : 9,194,560.20 = 3,606,916.74 : x
  2. Step 2: Convert to fraction form
    6,662,709.78/9,194,560.20 = 3,606,916.74/x
  3. Step 3: Cross multiply
    6,662,709.78x = 9,194,560.20 × 3,606,916.74
  4. Step 4: Simplify right side
    6,662,709.78x = 33,164,013,102,317.75
  5. Step 5: Solve for x
    x = 33,164,013,102,317.75/6,662,709.78
  6. Step 6: Final answer
    x = 4,977,556.31

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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.