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Finding the Fourth Proportional to 6,644,231.40, 9,966,347.10 and 5,687,637.60

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Solution

The fourth proportional to 6,644,231.40, 9,966,347.10 and 5,687,637.60 is: 8,531,456.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,644,231.40 : 9,966,347.10 = 5,687,637.60 : x
  2. Step 2: Convert to fraction form
    6,644,231.40/9,966,347.10 = 5,687,637.60/x
  3. Step 3: Cross multiply
    6,644,231.40x = 9,966,347.10 × 5,687,637.60
  4. Step 4: Simplify right side
    6,644,231.40x = 56,684,970,500,610.95
  5. Step 5: Solve for x
    x = 56,684,970,500,610.95/6,644,231.40
  6. Step 6: Final answer
    x = 8,531,456.40

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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.