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Finding the Fourth Proportional to 1,172.67, 1,754.75 and 1,037.81

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Solution

The fourth proportional to 1,172.67, 1,754.75 and 1,037.81 is: 1,552.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,172.67 : 1,754.75 = 1,037.81 : x
  2. Step 2: Convert to fraction form
    1,172.67/1,754.75 = 1,037.81/x
  3. Step 3: Cross multiply
    1,172.67x = 1,754.75 × 1,037.81
  4. Step 4: Simplify right side
    1,172.67x = 1,821,097.10
  5. Step 5: Solve for x
    x = 1,821,097.10/1,172.67
  6. Step 6: Final answer
    x = 1,552.95

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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.