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Finding the Fourth Proportional to 5,687,998.80, 8,531,998.20 and 5,314,750.80

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Solution

The fourth proportional to 5,687,998.80, 8,531,998.20 and 5,314,750.80 is: 7,972,126.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,687,998.80 : 8,531,998.20 = 5,314,750.80 : x
  2. Step 2: Convert to fraction form
    5,687,998.80/8,531,998.20 = 5,314,750.80/x
  3. Step 3: Cross multiply
    5,687,998.80x = 8,531,998.20 × 5,314,750.80
  4. Step 4: Simplify right side
    5,687,998.80x = 45,345,444,259,048.55
  5. Step 5: Solve for x
    x = 45,345,444,259,048.55/5,687,998.80
  6. Step 6: Final answer
    x = 7,972,126.20

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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.