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Finding the Fourth Proportional to 92,821.97, 128,094.43 and 50,380.51

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Solution

The fourth proportional to 92,821.97, 128,094.43 and 50,380.51 is: 69,525.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,821.97 : 128,094.43 = 50,380.51 : x
  2. Step 2: Convert to fraction form
    92,821.97/128,094.43 = 50,380.51/x
  3. Step 3: Cross multiply
    92,821.97x = 128,094.43 × 50,380.51
  4. Step 4: Simplify right side
    92,821.97x = 6,453,462,711.56
  5. Step 5: Solve for x
    x = 6,453,462,711.56/92,821.97
  6. Step 6: Final answer
    x = 69,525.16

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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.