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Finding the Fourth Proportional to 47,939.72, 71,916.06 and 45,023.72

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Solution

The fourth proportional to 47,939.72, 71,916.06 and 45,023.72 is: 67,541.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,939.72 : 71,916.06 = 45,023.72 : x
  2. Step 2: Convert to fraction form
    47,939.72/71,916.06 = 45,023.72/x
  3. Step 3: Cross multiply
    47,939.72x = 71,916.06 × 45,023.72
  4. Step 4: Simplify right side
    47,939.72x = 3,237,928,548.94
  5. Step 5: Solve for x
    x = 3,237,928,548.94/47,939.72
  6. Step 6: Final answer
    x = 67,541.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.