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Finding the Fourth Proportional to 61,486.34, 84,857.19 and 35,991.17

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Solution

The fourth proportional to 61,486.34, 84,857.19 and 35,991.17 is: 49,671.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,486.34 : 84,857.19 = 35,991.17 : x
  2. Step 2: Convert to fraction form
    61,486.34/84,857.19 = 35,991.17/x
  3. Step 3: Cross multiply
    61,486.34x = 84,857.19 × 35,991.17
  4. Step 4: Simplify right side
    61,486.34x = 3,054,109,309.97
  5. Step 5: Solve for x
    x = 3,054,109,309.97/61,486.34
  6. Step 6: Final answer
    x = 49,671.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.