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Finding the Third Proportional to 19,890,520 and 28,075,338

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Solution

The third proportional to 19,890,520 and 28,075,338 is: 39,628,154.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,890,520 : 28,075,338 = 28,075,338 : x
  2. Step 2: Convert to fraction form
    19,890,520/28,075,338 = 28,075,338/x
  3. Step 3: Cross multiply
    19,890,520x = 28,075,338 × 28,075,338
  4. Step 4: Simplify right side
    19,890,520x = 788,224,603,814,244
  5. Step 5: Solve for x
    x = 788,224,603,814,244/19,890,520
  6. Step 6: Final answer
    x = 39,628,154.71

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.