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Finding the Fourth Proportional to 58,939.21, 81,343.05 and 33,102.01

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Solution

The fourth proportional to 58,939.21, 81,343.05 and 33,102.01 is: 45,684.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,939.21 : 81,343.05 = 33,102.01 : x
  2. Step 2: Convert to fraction form
    58,939.21/81,343.05 = 33,102.01/x
  3. Step 3: Cross multiply
    58,939.21x = 81,343.05 × 33,102.01
  4. Step 4: Simplify right side
    58,939.21x = 2,692,618,454.53
  5. Step 5: Solve for x
    x = 2,692,618,454.53/58,939.21
  6. Step 6: Final answer
    x = 45,684.67

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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.