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Finding the Third Proportional to 999,490 and 2,185,382

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Solution

The third proportional to 999,490 and 2,185,382 is: 4,778,331.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,490 : 2,185,382 = 2,185,382 : x
  2. Step 2: Convert to fraction form
    999,490/2,185,382 = 2,185,382/x
  3. Step 3: Cross multiply
    999,490x = 2,185,382 × 2,185,382
  4. Step 4: Simplify right side
    999,490x = 4,775,894,485,924
  5. Step 5: Solve for x
    x = 4,775,894,485,924/999,490
  6. Step 6: Final answer
    x = 4,778,331.43

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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.