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Finding the Fourth Proportional to 57,390.74, 79,199.97 and 34,729.46

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Solution

The fourth proportional to 57,390.74, 79,199.97 and 34,729.46 is: 47,927.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,390.74 : 79,199.97 = 34,729.46 : x
  2. Step 2: Convert to fraction form
    57,390.74/79,199.97 = 34,729.46/x
  3. Step 3: Cross multiply
    57,390.74x = 79,199.97 × 34,729.46
  4. Step 4: Simplify right side
    57,390.74x = 2,750,572,190.12
  5. Step 5: Solve for x
    x = 2,750,572,190.12/57,390.74
  6. Step 6: Final answer
    x = 47,927.11

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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.