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Finding the Fourth Proportional to 2,750,762.81, 4,125,949.34 and 728,961.90

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Solution

The fourth proportional to 2,750,762.81, 4,125,949.34 and 728,961.90 is: 1,093,391.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,750,762.81 : 4,125,949.34 = 728,961.90 : x
  2. Step 2: Convert to fraction form
    2,750,762.81/4,125,949.34 = 728,961.90/x
  3. Step 3: Cross multiply
    2,750,762.81x = 4,125,949.34 × 728,961.90
  4. Step 4: Simplify right side
    2,750,762.81x = 3,007,659,866,545.34
  5. Step 5: Solve for x
    x = 3,007,659,866,545.34/2,750,762.81
  6. Step 6: Final answer
    x = 1,093,391.21

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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.