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Finding the Fourth Proportional to 2,579,607.25, 3,868,978.92 and 782,060.92

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Solution

The fourth proportional to 2,579,607.25, 3,868,978.92 and 782,060.92 is: 1,172,960.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,579,607.25 : 3,868,978.92 = 782,060.92 : x
  2. Step 2: Convert to fraction form
    2,579,607.25/3,868,978.92 = 782,060.92/x
  3. Step 3: Cross multiply
    2,579,607.25x = 3,868,978.92 × 782,060.92
  4. Step 4: Simplify right side
    2,579,607.25x = 3,025,777,213,635.81
  5. Step 5: Solve for x
    x = 3,025,777,213,635.81/2,579,607.25
  6. Step 6: Final answer
    x = 1,172,960.42

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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.