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Finding the Fourth Proportional to 1,981,923.57, 2,971,835.60 and 783,797.49

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Solution

The fourth proportional to 1,981,923.57, 2,971,835.60 and 783,797.49 is: 1,175,281.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981,923.57 : 2,971,835.60 = 783,797.49 : x
  2. Step 2: Convert to fraction form
    1,981,923.57/2,971,835.60 = 783,797.49/x
  3. Step 3: Cross multiply
    1,981,923.57x = 2,971,835.60 × 783,797.49
  4. Step 4: Simplify right side
    1,981,923.57x = 2,329,317,280,053.66
  5. Step 5: Solve for x
    x = 2,329,317,280,053.66/1,981,923.57
  6. Step 6: Final answer
    x = 1,175,281.08

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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.