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Finding the Fourth Proportional to 3,752.04, 5,628.24 and 1,155

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Solution

The fourth proportional to 3,752.04, 5,628.24 and 1,155 is: 1,732.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,752.04 : 5,628.24 = 1,155 : x
  2. Step 2: Convert to fraction form
    3,752.04/5,628.24 = 1,155/x
  3. Step 3: Cross multiply
    3,752.04x = 5,628.24 × 1,155
  4. Step 4: Simplify right side
    3,752.04x = 6,500,617.20
  5. Step 5: Solve for x
    x = 6,500,617.20/3,752.04
  6. Step 6: Final answer
    x = 1,732.56

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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.