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Finding the Fourth Proportional to 7,371.50, 10,172.68 and 4,059.50

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Solution

The fourth proportional to 7,371.50, 10,172.68 and 4,059.50 is: 5,602.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,371.50 : 10,172.68 = 4,059.50 : x
  2. Step 2: Convert to fraction form
    7,371.50/10,172.68 = 4,059.50/x
  3. Step 3: Cross multiply
    7,371.50x = 10,172.68 × 4,059.50
  4. Step 4: Simplify right side
    7,371.50x = 41,295,994.46
  5. Step 5: Solve for x
    x = 41,295,994.46/7,371.50
  6. Step 6: Final answer
    x = 5,602.12

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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.