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Finding the Fourth Proportional to 18,696.14, 28,036.02 and 7,001.16

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Solution

The fourth proportional to 18,696.14, 28,036.02 and 7,001.16 is: 10,498.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,696.14 : 28,036.02 = 7,001.16 : x
  2. Step 2: Convert to fraction form
    18,696.14/28,036.02 = 7,001.16/x
  3. Step 3: Cross multiply
    18,696.14x = 28,036.02 × 7,001.16
  4. Step 4: Simplify right side
    18,696.14x = 196,284,661.78
  5. Step 5: Solve for x
    x = 196,284,661.78/18,696.14
  6. Step 6: Final answer
    x = 10,498.67

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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.