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Finding the Fourth Proportional to 1,918,773.96, 2,647,865.10 and 1,047,579

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Solution

The fourth proportional to 1,918,773.96, 2,647,865.10 and 1,047,579 is: 1,445,635.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918,773.96 : 2,647,865.10 = 1,047,579 : x
  2. Step 2: Convert to fraction form
    1,918,773.96/2,647,865.10 = 1,047,579/x
  3. Step 3: Cross multiply
    1,918,773.96x = 2,647,865.10 × 1,047,579
  4. Step 4: Simplify right side
    1,918,773.96x = 2,773,847,873,592.90
  5. Step 5: Solve for x
    x = 2,773,847,873,592.90/1,918,773.96
  6. Step 6: Final answer
    x = 1,445,635.56

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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.