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Finding the Fourth Proportional to 50,900.95, 70,243.74 and 28,241.43

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Solution

The fourth proportional to 50,900.95, 70,243.74 and 28,241.43 is: 38,973.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,900.95 : 70,243.74 = 28,241.43 : x
  2. Step 2: Convert to fraction form
    50,900.95/70,243.74 = 28,241.43/x
  3. Step 3: Cross multiply
    50,900.95x = 70,243.74 × 28,241.43
  4. Step 4: Simplify right side
    50,900.95x = 1,983,783,666.15
  5. Step 5: Solve for x
    x = 1,983,783,666.15/50,900.95
  6. Step 6: Final answer
    x = 38,973.41

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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.