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Finding the Fourth Proportional to 1,235,893.20, 1,853,839.80 and 1,235,893.20

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Solution

The fourth proportional to 1,235,893.20, 1,853,839.80 and 1,235,893.20 is: 1,853,839.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,235,893.20 : 1,853,839.80 = 1,235,893.20 : x
  2. Step 2: Convert to fraction form
    1,235,893.20/1,853,839.80 = 1,235,893.20/x
  3. Step 3: Cross multiply
    1,235,893.20x = 1,853,839.80 × 1,235,893.20
  4. Step 4: Simplify right side
    1,235,893.20x = 2,291,148,002,709.36
  5. Step 5: Solve for x
    x = 2,291,148,002,709.36/1,235,893.20
  6. Step 6: Final answer
    x = 1,853,839.80

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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.