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Finding the Third Proportional to 9,121,905 and 19,831,536

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Solution

The third proportional to 9,121,905 and 19,831,536 is: 43,114,877.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121,905 : 19,831,536 = 19,831,536 : x
  2. Step 2: Convert to fraction form
    9,121,905/19,831,536 = 19,831,536/x
  3. Step 3: Cross multiply
    9,121,905x = 19,831,536 × 19,831,536
  4. Step 4: Simplify right side
    9,121,905x = 393,289,820,119,296
  5. Step 5: Solve for x
    x = 393,289,820,119,296/9,121,905
  6. Step 6: Final answer
    x = 43,114,877.88

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.