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Finding the Fourth Proportional to 5,575.78, 8,364.06 and 2,113

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Solution

The fourth proportional to 5,575.78, 8,364.06 and 2,113 is: 3,169.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,575.78 : 8,364.06 = 2,113 : x
  2. Step 2: Convert to fraction form
    5,575.78/8,364.06 = 2,113/x
  3. Step 3: Cross multiply
    5,575.78x = 8,364.06 × 2,113
  4. Step 4: Simplify right side
    5,575.78x = 17,673,258.78
  5. Step 5: Solve for x
    x = 17,673,258.78/5,575.78
  6. Step 6: Final answer
    x = 3,169.65

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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.