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Finding the Fourth Proportional to 413,927.20, 620,737.20 and 164,557.60

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Solution

The fourth proportional to 413,927.20, 620,737.20 and 164,557.60 is: 246,775.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,927.20 : 620,737.20 = 164,557.60 : x
  2. Step 2: Convert to fraction form
    413,927.20/620,737.20 = 164,557.60/x
  3. Step 3: Cross multiply
    413,927.20x = 620,737.20 × 164,557.60
  4. Step 4: Simplify right side
    413,927.20x = 102,147,023,862.72
  5. Step 5: Solve for x
    x = 102,147,023,862.72/413,927.20
  6. Step 6: Final answer
    x = 246,775.34

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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.