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Finding the Fourth Proportional to 1,933,779.72, 2,900,370.06 and 987,849.48

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Solution

The fourth proportional to 1,933,779.72, 2,900,370.06 and 987,849.48 is: 1,481,621.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,933,779.72 : 2,900,370.06 = 987,849.48 : x
  2. Step 2: Convert to fraction form
    1,933,779.72/2,900,370.06 = 987,849.48/x
  3. Step 3: Cross multiply
    1,933,779.72x = 2,900,370.06 × 987,849.48
  4. Step 4: Simplify right side
    1,933,779.72x = 2,865,129,055,578.57
  5. Step 5: Solve for x
    x = 2,865,129,055,578.57/1,933,779.72
  6. Step 6: Final answer
    x = 1,481,621.21

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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.