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Finding the Third Proportional to 19,890,588 and 28,075,440

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Solution

The third proportional to 19,890,588 and 28,075,440 is: 39,628,307.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,890,588 : 28,075,440 = 28,075,440 : x
  2. Step 2: Convert to fraction form
    19,890,588/28,075,440 = 28,075,440/x
  3. Step 3: Cross multiply
    19,890,588x = 28,075,440 × 28,075,440
  4. Step 4: Simplify right side
    19,890,588x = 788,230,331,193,600
  5. Step 5: Solve for x
    x = 788,230,331,193,600/19,890,588
  6. Step 6: Final answer
    x = 39,628,307.18

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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.