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Finding the Fourth Proportional to 6,644,556.70, 9,966,316.65 and 2,600,259.10

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Solution

The fourth proportional to 6,644,556.70, 9,966,316.65 and 2,600,259.10 is: 3,900,185.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,644,556.70 : 9,966,316.65 = 2,600,259.10 : x
  2. Step 2: Convert to fraction form
    6,644,556.70/9,966,316.65 = 2,600,259.10/x
  3. Step 3: Cross multiply
    6,644,556.70x = 9,966,316.65 × 2,600,259.10
  4. Step 4: Simplify right side
    6,644,556.70x = 25,915,005,562,644.02
  5. Step 5: Solve for x
    x = 25,915,005,562,644.02/6,644,556.70
  6. Step 6: Final answer
    x = 3,900,185.78

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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.