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Finding the Fourth Proportional to 1,346,586.92, 1,858,381 and 773,855.40

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Solution

The fourth proportional to 1,346,586.92, 1,858,381 and 773,855.40 is: 1,067,972.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,346,586.92 : 1,858,381 = 773,855.40 : x
  2. Step 2: Convert to fraction form
    1,346,586.92/1,858,381 = 773,855.40/x
  3. Step 3: Cross multiply
    1,346,586.92x = 1,858,381 × 773,855.40
  4. Step 4: Simplify right side
    1,346,586.92x = 1,438,118,172,107.40
  5. Step 5: Solve for x
    x = 1,438,118,172,107.40/1,346,586.92
  6. Step 6: Final answer
    x = 1,067,972.78

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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.