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Finding the Third Proportional to 12,691,670.63 and 19,619,701.88

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Solution

The third proportional to 12,691,670.63 and 19,619,701.88 is: 30,329,553.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,691,670.63 : 19,619,701.88 = 19,619,701.88 : x
  2. Step 2: Convert to fraction form
    12,691,670.63/19,619,701.88 = 19,619,701.88/x
  3. Step 3: Cross multiply
    12,691,670.63x = 19,619,701.88 × 19,619,701.88
  4. Step 4: Simplify right side
    12,691,670.63x = 384,932,701,663,878.50
  5. Step 5: Solve for x
    x = 384,932,701,663,878.50/12,691,670.63
  6. Step 6: Final answer
    x = 30,329,553.38

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.