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Finding the Third Proportional to 12,388,176,690 and 18,937,757,673

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Solution

The third proportional to 12,388,176,690 and 18,937,757,673 is: 28,950,076,726.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,388,176,690 : 18,937,757,673 = 18,937,757,673 : x
  2. Step 2: Convert to fraction form
    12,388,176,690/18,937,757,673 = 18,937,757,673/x
  3. Step 3: Cross multiply
    12,388,176,690x = 18,937,757,673 × 18,937,757,673
  4. Step 4: Simplify right side
    12,388,176,690x = 358,638,665,681,270,407,168
  5. Step 5: Solve for x
    x = 358,638,665,681,270,407,168/12,388,176,690
  6. Step 6: Final answer
    x = 28,950,076,726.85

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.