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Finding the Fourth Proportional to 57,676.89, 86,508.18 and 15,560.40

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Solution

The fourth proportional to 57,676.89, 86,508.18 and 15,560.40 is: 23,338.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,676.89 : 86,508.18 = 15,560.40 : x
  2. Step 2: Convert to fraction form
    57,676.89/86,508.18 = 15,560.40/x
  3. Step 3: Cross multiply
    57,676.89x = 86,508.18 × 15,560.40
  4. Step 4: Simplify right side
    57,676.89x = 1,346,101,884.07
  5. Step 5: Solve for x
    x = 1,346,101,884.07/57,676.89
  6. Step 6: Final answer
    x = 23,338.67

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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.