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Finding the Fourth Proportional to 8,687,583.20, 13,018,544.40 and 6,296,463.20

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Solution

The fourth proportional to 8,687,583.20, 13,018,544.40 and 6,296,463.20 is: 9,435,395.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,687,583.20 : 13,018,544.40 = 6,296,463.20 : x
  2. Step 2: Convert to fraction form
    8,687,583.20/13,018,544.40 = 6,296,463.20/x
  3. Step 3: Cross multiply
    8,687,583.20x = 13,018,544.40 × 6,296,463.20
  4. Step 4: Simplify right side
    8,687,583.20x = 81,970,785,732,166.08
  5. Step 5: Solve for x
    x = 81,970,785,732,166.08/8,687,583.20
  6. Step 6: Final answer
    x = 9,435,395.76

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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.