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Finding the Fourth Proportional to 18,695.24, 28,041.76 and 7,007.48

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Solution

The fourth proportional to 18,695.24, 28,041.76 and 7,007.48 is: 10,510.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,695.24 : 28,041.76 = 7,007.48 : x
  2. Step 2: Convert to fraction form
    18,695.24/28,041.76 = 7,007.48/x
  3. Step 3: Cross multiply
    18,695.24x = 28,041.76 × 7,007.48
  4. Step 4: Simplify right side
    18,695.24x = 196,502,072.36
  5. Step 5: Solve for x
    x = 196,502,072.36/18,695.24
  6. Step 6: Final answer
    x = 10,510.81

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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.