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Finding the Fourth Proportional to 8,676.48, 13,014.72 and 3,478.72

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Solution

The fourth proportional to 8,676.48, 13,014.72 and 3,478.72 is: 5,218.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,676.48 : 13,014.72 = 3,478.72 : x
  2. Step 2: Convert to fraction form
    8,676.48/13,014.72 = 3,478.72/x
  3. Step 3: Cross multiply
    8,676.48x = 13,014.72 × 3,478.72
  4. Step 4: Simplify right side
    8,676.48x = 45,274,566.76
  5. Step 5: Solve for x
    x = 45,274,566.76/8,676.48
  6. Step 6: Final answer
    x = 5,218.08

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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.