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Finding the Fourth Proportional to 9,103.16, 13,654.66 and 2,947.16

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Solution

The fourth proportional to 9,103.16, 13,654.66 and 2,947.16 is: 4,420.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,103.16 : 13,654.66 = 2,947.16 : x
  2. Step 2: Convert to fraction form
    9,103.16/13,654.66 = 2,947.16/x
  3. Step 3: Cross multiply
    9,103.16x = 13,654.66 × 2,947.16
  4. Step 4: Simplify right side
    9,103.16x = 40,242,467.77
  5. Step 5: Solve for x
    x = 40,242,467.77/9,103.16
  6. Step 6: Final answer
    x = 4,420.71

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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.