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Finding the Third Proportional to 8,987,977.69 and 19,657,811.53

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Solution

The third proportional to 8,987,977.69 and 19,657,811.53 is: 42,994,049.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,987,977.69 : 19,657,811.53 = 19,657,811.53 : x
  2. Step 2: Convert to fraction form
    8,987,977.69/19,657,811.53 = 19,657,811.53/x
  3. Step 3: Cross multiply
    8,987,977.69x = 19,657,811.53 × 19,657,811.53
  4. Step 4: Simplify right side
    8,987,977.69x = 386,429,554,198,145.50
  5. Step 5: Solve for x
    x = 386,429,554,198,145.50/8,987,977.69
  6. Step 6: Final answer
    x = 42,994,049.12

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.