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Finding the Fourth Proportional to 3,815,744.40, 5,723,616.60 and 976,078.80

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Solution

The fourth proportional to 3,815,744.40, 5,723,616.60 and 976,078.80 is: 1,464,118.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815,744.40 : 5,723,616.60 = 976,078.80 : x
  2. Step 2: Convert to fraction form
    3,815,744.40/5,723,616.60 = 976,078.80/x
  3. Step 3: Cross multiply
    3,815,744.40x = 5,723,616.60 × 976,078.80
  4. Step 4: Simplify right side
    3,815,744.40x = 5,586,700,822,588.08
  5. Step 5: Solve for x
    x = 5,586,700,822,588.08/3,815,744.40
  6. Step 6: Final answer
    x = 1,464,118.20

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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.