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Finding the Third Proportional to 1,867,659.19 and 2,855,685.38

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Solution

The third proportional to 1,867,659.19 and 2,855,685.38 is: 4,366,395.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867,659.19 : 2,855,685.38 = 2,855,685.38 : x
  2. Step 2: Convert to fraction form
    1,867,659.19/2,855,685.38 = 2,855,685.38/x
  3. Step 3: Cross multiply
    1,867,659.19x = 2,855,685.38 × 2,855,685.38
  4. Step 4: Simplify right side
    1,867,659.19x = 8,154,938,960,988.89
  5. Step 5: Solve for x
    x = 8,154,938,960,988.89/1,867,659.19
  6. Step 6: Final answer
    x = 4,366,395.65

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.