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Finding the Third Proportional to 91,920,786 and 196,955,280

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Solution

The third proportional to 91,920,786 and 196,955,280 is: 422,008,818.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,920,786 : 196,955,280 = 196,955,280 : x
  2. Step 2: Convert to fraction form
    91,920,786/196,955,280 = 196,955,280/x
  3. Step 3: Cross multiply
    91,920,786x = 196,955,280 × 196,955,280
  4. Step 4: Simplify right side
    91,920,786x = 38,791,382,319,878,400
  5. Step 5: Solve for x
    x = 38,791,382,319,878,400/91,920,786
  6. Step 6: Final answer
    x = 422,008,818.77

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.