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Finding the Fourth Proportional to 3,737,728.90, 5,158,113.69 and 2,209,822.66

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Solution

The fourth proportional to 3,737,728.90, 5,158,113.69 and 2,209,822.66 is: 3,049,583.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,737,728.90 : 5,158,113.69 = 2,209,822.66 : x
  2. Step 2: Convert to fraction form
    3,737,728.90/5,158,113.69 = 2,209,822.66/x
  3. Step 3: Cross multiply
    3,737,728.90x = 5,158,113.69 × 2,209,822.66
  4. Step 4: Simplify right side
    3,737,728.90x = 11,398,516,515,018.22
  5. Step 5: Solve for x
    x = 11,398,516,515,018.22/3,737,728.90
  6. Step 6: Final answer
    x = 3,049,583.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.