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Finding the Fourth Proportional to 1,085,944,687.80, 1,628,917,031.70 and 1,085,944,687.80

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Solution

The fourth proportional to 1,085,944,687.80, 1,628,917,031.70 and 1,085,944,687.80 is: 1,628,917,031.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,085,944,687.80 : 1,628,917,031.70 = 1,085,944,687.80 : x
  2. Step 2: Convert to fraction form
    1,085,944,687.80/1,628,917,031.70 = 1,085,944,687.80/x
  3. Step 3: Cross multiply
    1,085,944,687.80x = 1,628,917,031.70 × 1,085,944,687.80
  4. Step 4: Simplify right side
    1,085,944,687.80x = 1,768,913,797,441,559,296
  5. Step 5: Solve for x
    x = 1,768,913,797,441,559,296/1,085,944,687.80
  6. Step 6: Final answer
    x = 1,628,917,031.70

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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.