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Finding the Fourth Proportional to 5,321,903.40, 7,982,855.10 and 1,955,413.80

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Solution

The fourth proportional to 5,321,903.40, 7,982,855.10 and 1,955,413.80 is: 2,933,120.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,321,903.40 : 7,982,855.10 = 1,955,413.80 : x
  2. Step 2: Convert to fraction form
    5,321,903.40/7,982,855.10 = 1,955,413.80/x
  3. Step 3: Cross multiply
    5,321,903.40x = 7,982,855.10 × 1,955,413.80
  4. Step 4: Simplify right side
    5,321,903.40x = 15,609,785,025,940.38
  5. Step 5: Solve for x
    x = 15,609,785,025,940.38/5,321,903.40
  6. Step 6: Final answer
    x = 2,933,120.70

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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.