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Finding the Fourth Proportional to 1,283,990,890.76, 1,771,907,686.22 and 782,199,648.22

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Solution

The fourth proportional to 1,283,990,890.76, 1,771,907,686.22 and 782,199,648.22 is: 1,079,435,671.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,283,990,890.76 : 1,771,907,686.22 = 782,199,648.22 : x
  2. Step 2: Convert to fraction form
    1,283,990,890.76/1,771,907,686.22 = 782,199,648.22/x
  3. Step 3: Cross multiply
    1,283,990,890.76x = 1,771,907,686.22 × 782,199,648.22
  4. Step 4: Simplify right side
    1,283,990,890.76x = 1,385,985,568,839,598,336
  5. Step 5: Solve for x
    x = 1,385,985,568,839,598,336/1,283,990,890.76
  6. Step 6: Final answer
    x = 1,079,435,671.09

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Find fourth proportional to 1,283,990,891.76, 1,771,907,687.60 and 782,199,649.22
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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.