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Finding the Third Proportional to 999,432 and 2,185,272

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Solution

The third proportional to 999,432 and 2,185,272 is: 4,778,127.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,432 : 2,185,272 = 2,185,272 : x
  2. Step 2: Convert to fraction form
    999,432/2,185,272 = 2,185,272/x
  3. Step 3: Cross multiply
    999,432x = 2,185,272 × 2,185,272
  4. Step 4: Simplify right side
    999,432x = 4,775,413,713,984
  5. Step 5: Solve for x
    x = 4,775,413,713,984/999,432
  6. Step 6: Final answer
    x = 4,778,127.69

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.