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Finding the Third Proportional to 86,643,508 and 190,290,640

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Solution

The third proportional to 86,643,508 and 190,290,640 is: 417,925,456.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,643,508 : 190,290,640 = 190,290,640 : x
  2. Step 2: Convert to fraction form
    86,643,508/190,290,640 = 190,290,640/x
  3. Step 3: Cross multiply
    86,643,508x = 190,290,640 × 190,290,640
  4. Step 4: Simplify right side
    86,643,508x = 36,210,527,671,609,600
  5. Step 5: Solve for x
    x = 36,210,527,671,609,600/86,643,508
  6. Step 6: Final answer
    x = 417,925,456.94

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.