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Finding the Fourth Proportional to 16,977.15, 25,473.42 and 7,118.64

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Solution

The fourth proportional to 16,977.15, 25,473.42 and 7,118.64 is: 10,681.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,977.15 : 25,473.42 = 7,118.64 : x
  2. Step 2: Convert to fraction form
    16,977.15/25,473.42 = 7,118.64/x
  3. Step 3: Cross multiply
    16,977.15x = 25,473.42 × 7,118.64
  4. Step 4: Simplify right side
    16,977.15x = 181,336,106.55
  5. Step 5: Solve for x
    x = 181,336,106.55/16,977.15
  6. Step 6: Final answer
    x = 10,681.19

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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.