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Finding the Third Proportional to 1,909,128 and 4,117,136

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Solution

The third proportional to 1,909,128 and 4,117,136 is: 8,878,822.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909,128 : 4,117,136 = 4,117,136 : x
  2. Step 2: Convert to fraction form
    1,909,128/4,117,136 = 4,117,136/x
  3. Step 3: Cross multiply
    1,909,128x = 4,117,136 × 4,117,136
  4. Step 4: Simplify right side
    1,909,128x = 16,950,808,842,496
  5. Step 5: Solve for x
    x = 16,950,808,842,496/1,909,128
  6. Step 6: Final answer
    x = 8,878,822.61

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These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.