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Finding the Fourth Proportional to 50,871.34, 70,199.01 and 28,209.49

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Solution

The fourth proportional to 50,871.34, 70,199.01 and 28,209.49 is: 38,927.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,871.34 : 70,199.01 = 28,209.49 : x
  2. Step 2: Convert to fraction form
    50,871.34/70,199.01 = 28,209.49/x
  3. Step 3: Cross multiply
    50,871.34x = 70,199.01 × 28,209.49
  4. Step 4: Simplify right side
    50,871.34x = 1,980,278,270.60
  5. Step 5: Solve for x
    x = 1,980,278,270.60/50,871.34
  6. Step 6: Final answer
    x = 38,927.19

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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.