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Finding the Fourth Proportional to 641,556.60, 962,565.30 and 618,516.60

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Solution

The fourth proportional to 641,556.60, 962,565.30 and 618,516.60 is: 927,997.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,556.60 : 962,565.30 = 618,516.60 : x
  2. Step 2: Convert to fraction form
    641,556.60/962,565.30 = 618,516.60/x
  3. Step 3: Cross multiply
    641,556.60x = 962,565.30 × 618,516.60
  4. Step 4: Simplify right side
    641,556.60x = 595,362,616,633.98
  5. Step 5: Solve for x
    x = 595,362,616,633.98/641,556.60
  6. Step 6: Final answer
    x = 927,997.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.