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Finding the Third Proportional to 39,572 and 84,290

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Solution

The third proportional to 39,572 and 84,290 is: 179,541.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,572 : 84,290 = 84,290 : x
  2. Step 2: Convert to fraction form
    39,572/84,290 = 84,290/x
  3. Step 3: Cross multiply
    39,572x = 84,290 × 84,290
  4. Step 4: Simplify right side
    39,572x = 7,104,804,100
  5. Step 5: Solve for x
    x = 7,104,804,100/39,572
  6. Step 6: Final answer
    x = 179,541.19

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.