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Finding the Fourth Proportional to 1,797,742.48, 2,480,869.88 and 981,946.69

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Solution

The fourth proportional to 1,797,742.48, 2,480,869.88 and 981,946.69 is: 1,355,078.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,797,742.48 : 2,480,869.88 = 981,946.69 : x
  2. Step 2: Convert to fraction form
    1,797,742.48/2,480,869.88 = 981,946.69/x
  3. Step 3: Cross multiply
    1,797,742.48x = 2,480,869.88 × 981,946.69
  4. Step 4: Simplify right side
    1,797,742.48x = 2,436,081,957,037.21
  5. Step 5: Solve for x
    x = 2,436,081,957,037.21/1,797,742.48
  6. Step 6: Final answer
    x = 1,355,078.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.