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Finding the Third Proportional to 19,890,556 and 28,075,382

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Solution

The third proportional to 19,890,556 and 28,075,382 is: 39,628,207.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,890,556 : 28,075,382 = 28,075,382 : x
  2. Step 2: Convert to fraction form
    19,890,556/28,075,382 = 28,075,382/x
  3. Step 3: Cross multiply
    19,890,556x = 28,075,382 × 28,075,382
  4. Step 4: Simplify right side
    19,890,556x = 788,227,074,445,924
  5. Step 5: Solve for x
    x = 788,227,074,445,924/19,890,556
  6. Step 6: Final answer
    x = 39,628,207.20

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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.