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Finding the Fourth Proportional to 1,230,196.40, 1,843,739.40 and 1,096,449.20

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Solution

The fourth proportional to 1,230,196.40, 1,843,739.40 and 1,096,449.20 is: 1,643,287.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,196.40 : 1,843,739.40 = 1,096,449.20 : x
  2. Step 2: Convert to fraction form
    1,230,196.40/1,843,739.40 = 1,096,449.20/x
  3. Step 3: Cross multiply
    1,230,196.40x = 1,843,739.40 × 1,096,449.20
  4. Step 4: Simplify right side
    1,230,196.40x = 2,021,566,590,138.48
  5. Step 5: Solve for x
    x = 2,021,566,590,138.48/1,230,196.40
  6. Step 6: Final answer
    x = 1,643,287.68

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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.