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Finding the Fourth Proportional to 16,918.62, 25,384.44 and 7,055.28

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Solution

The fourth proportional to 16,918.62, 25,384.44 and 7,055.28 is: 10,585.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,918.62 : 25,384.44 = 7,055.28 : x
  2. Step 2: Convert to fraction form
    16,918.62/25,384.44 = 7,055.28/x
  3. Step 3: Cross multiply
    16,918.62x = 25,384.44 × 7,055.28
  4. Step 4: Simplify right side
    16,918.62x = 179,094,331.84
  5. Step 5: Solve for x
    x = 179,094,331.84/16,918.62
  6. Step 6: Final answer
    x = 10,585.63

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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.