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Finding the Third Proportional to 1,718,889.61 and 3,642,681.38

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Solution

The third proportional to 1,718,889.61 and 3,642,681.38 is: 7,719,592.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,718,889.61 : 3,642,681.38 = 3,642,681.38 : x
  2. Step 2: Convert to fraction form
    1,718,889.61/3,642,681.38 = 3,642,681.38/x
  3. Step 3: Cross multiply
    1,718,889.61x = 3,642,681.38 × 3,642,681.38
  4. Step 4: Simplify right side
    1,718,889.61x = 13,269,127,599,771.89
  5. Step 5: Solve for x
    x = 13,269,127,599,771.89/1,718,889.61
  6. Step 6: Final answer
    x = 7,719,592.65

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.