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Finding the Fourth Proportional to 2,900,745.90, 4,065,243.30 and 2,900,745.90

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Solution

The fourth proportional to 2,900,745.90, 4,065,243.30 and 2,900,745.90 is: 4,065,243.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,900,745.90 : 4,065,243.30 = 2,900,745.90 : x
  2. Step 2: Convert to fraction form
    2,900,745.90/4,065,243.30 = 2,900,745.90/x
  3. Step 3: Cross multiply
    2,900,745.90x = 4,065,243.30 × 2,900,745.90
  4. Step 4: Simplify right side
    2,900,745.90x = 11,792,237,834,977.47
  5. Step 5: Solve for x
    x = 11,792,237,834,977.47/2,900,745.90
  6. Step 6: Final answer
    x = 4,065,243.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.