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Finding the Third Proportional to 403,155 and 847,683

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Solution

The third proportional to 403,155 and 847,683 is: 1,782,357.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,155 : 847,683 = 847,683 : x
  2. Step 2: Convert to fraction form
    403,155/847,683 = 847,683/x
  3. Step 3: Cross multiply
    403,155x = 847,683 × 847,683
  4. Step 4: Simplify right side
    403,155x = 718,566,468,489
  5. Step 5: Solve for x
    x = 718,566,468,489/403,155
  6. Step 6: Final answer
    x = 1,782,357.82

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.