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Finding the Third Proportional to 19,890,516 and 28,075,332

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Solution

The third proportional to 19,890,516 and 28,075,332 is: 39,628,145.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,890,516 : 28,075,332 = 28,075,332 : x
  2. Step 2: Convert to fraction form
    19,890,516/28,075,332 = 28,075,332/x
  3. Step 3: Cross multiply
    19,890,516x = 28,075,332 × 28,075,332
  4. Step 4: Simplify right side
    19,890,516x = 788,224,266,910,224
  5. Step 5: Solve for x
    x = 788,224,266,910,224/19,890,516
  6. Step 6: Final answer
    x = 39,628,145.74

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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.