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Finding the Fourth Proportional to 1,168.07, 1,752.55 and 518.36

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Solution

The fourth proportional to 1,168.07, 1,752.55 and 518.36 is: 777.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,168.07 : 1,752.55 = 518.36 : x
  2. Step 2: Convert to fraction form
    1,168.07/1,752.55 = 518.36/x
  3. Step 3: Cross multiply
    1,168.07x = 1,752.55 × 518.36
  4. Step 4: Simplify right side
    1,168.07x = 908,441.76
  5. Step 5: Solve for x
    x = 908,441.76/1,168.07
  6. Step 6: Final answer
    x = 777.73

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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.