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Finding the Third Proportional to 2,121,612.75 and 4,579,294.50

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Solution

The third proportional to 2,121,612.75 and 4,579,294.50 is: 9,883,961.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121,612.75 : 4,579,294.50 = 4,579,294.50 : x
  2. Step 2: Convert to fraction form
    2,121,612.75/4,579,294.50 = 4,579,294.50/x
  3. Step 3: Cross multiply
    2,121,612.75x = 4,579,294.50 × 4,579,294.50
  4. Step 4: Simplify right side
    2,121,612.75x = 20,969,938,117,730.25
  5. Step 5: Solve for x
    x = 20,969,938,117,730.25/2,121,612.75
  6. Step 6: Final answer
    x = 9,883,961.21

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.