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Finding the Fourth Proportional to 18,712.08, 28,053.32 and 7,024

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Solution

The fourth proportional to 18,712.08, 28,053.32 and 7,024 is: 10,530.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,712.08 : 28,053.32 = 7,024 : x
  2. Step 2: Convert to fraction form
    18,712.08/28,053.32 = 7,024/x
  3. Step 3: Cross multiply
    18,712.08x = 28,053.32 × 7,024
  4. Step 4: Simplify right side
    18,712.08x = 197,046,519.68
  5. Step 5: Solve for x
    x = 197,046,519.68/18,712.08
  6. Step 6: Final answer
    x = 10,530.44

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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.