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Finding the Fourth Proportional to 1,400,771,251, 1,933,105,435.68 and 765,726,834.04

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Solution

The fourth proportional to 1,400,771,251, 1,933,105,435.68 and 765,726,834.04 is: 1,056,725,503.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400,771,251 : 1,933,105,435.68 = 765,726,834.04 : x
  2. Step 2: Convert to fraction form
    1,400,771,251/1,933,105,435.68 = 765,726,834.04/x
  3. Step 3: Cross multiply
    1,400,771,251x = 1,933,105,435.68 × 765,726,834.04
  4. Step 4: Simplify right side
    1,400,771,251x = 1,480,230,705,128,761,344
  5. Step 5: Solve for x
    x = 1,480,230,705,128,761,344/1,400,771,251
  6. Step 6: Final answer
    x = 1,056,725,503.23

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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.