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Finding the Fourth Proportional to 1,576,917.20, 2,365,375.80 and 981,664.40

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Solution

The fourth proportional to 1,576,917.20, 2,365,375.80 and 981,664.40 is: 1,472,496.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,576,917.20 : 2,365,375.80 = 981,664.40 : x
  2. Step 2: Convert to fraction form
    1,576,917.20/2,365,375.80 = 981,664.40/x
  3. Step 3: Cross multiply
    1,576,917.20x = 2,365,375.80 × 981,664.40
  4. Step 4: Simplify right side
    1,576,917.20x = 2,322,005,215,481.52
  5. Step 5: Solve for x
    x = 2,322,005,215,481.52/1,576,917.20
  6. Step 6: Final answer
    x = 1,472,496.60

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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.