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Finding the Fourth Proportional to 92,285, 138,450.62 and 26,621

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Solution

The fourth proportional to 92,285, 138,450.62 and 26,621 is: 39,938.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,285 : 138,450.62 = 26,621 : x
  2. Step 2: Convert to fraction form
    92,285/138,450.62 = 26,621/x
  3. Step 3: Cross multiply
    92,285x = 138,450.62 × 26,621
  4. Step 4: Simplify right side
    92,285x = 3,685,693,955.02
  5. Step 5: Solve for x
    x = 3,685,693,955.02/92,285
  6. Step 6: Final answer
    x = 39,938.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.