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Finding the Third Proportional to 91,991,790 and 186,686,712

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Solution

The third proportional to 91,991,790 and 186,686,712 is: 378,859,118.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,991,790 : 186,686,712 = 186,686,712 : x
  2. Step 2: Convert to fraction form
    91,991,790/186,686,712 = 186,686,712/x
  3. Step 3: Cross multiply
    91,991,790x = 186,686,712 × 186,686,712
  4. Step 4: Simplify right side
    91,991,790x = 34,851,928,437,370,944
  5. Step 5: Solve for x
    x = 34,851,928,437,370,944/91,991,790
  6. Step 6: Final answer
    x = 378,859,118.16

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.