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Finding the Fourth Proportional to 7,047.13, 9,724.92 and 3,903.37

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Solution

The fourth proportional to 7,047.13, 9,724.92 and 3,903.37 is: 5,386.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,047.13 : 9,724.92 = 3,903.37 : x
  2. Step 2: Convert to fraction form
    7,047.13/9,724.92 = 3,903.37/x
  3. Step 3: Cross multiply
    7,047.13x = 9,724.92 × 3,903.37
  4. Step 4: Simplify right side
    7,047.13x = 37,959,960.98
  5. Step 5: Solve for x
    x = 37,959,960.98/7,047.13
  6. Step 6: Final answer
    x = 5,386.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.