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Finding the Third Proportional to 19,111 and 39,572

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Solution

The third proportional to 19,111 and 39,572 is: 81,939.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,111 : 39,572 = 39,572 : x
  2. Step 2: Convert to fraction form
    19,111/39,572 = 39,572/x
  3. Step 3: Cross multiply
    19,111x = 39,572 × 39,572
  4. Step 4: Simplify right side
    19,111x = 1,565,943,184
  5. Step 5: Solve for x
    x = 1,565,943,184/19,111
  6. Step 6: Final answer
    x = 81,939.36

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.