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Finding the Fourth Proportional to 1,066,788.40, 1,601,057.40 and 1,031,796.40

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Solution

The fourth proportional to 1,066,788.40, 1,601,057.40 and 1,031,796.40 is: 1,548,540.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,066,788.40 : 1,601,057.40 = 1,031,796.40 : x
  2. Step 2: Convert to fraction form
    1,066,788.40/1,601,057.40 = 1,031,796.40/x
  3. Step 3: Cross multiply
    1,066,788.40x = 1,601,057.40 × 1,031,796.40
  4. Step 4: Simplify right side
    1,066,788.40x = 1,651,965,261,513.36
  5. Step 5: Solve for x
    x = 1,651,965,261,513.36/1,066,788.40
  6. Step 6: Final answer
    x = 1,548,540.71

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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.