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Finding the Fourth Proportional to 1,180.10, 1,767.74 and 561.94

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Solution

The fourth proportional to 1,180.10, 1,767.74 and 561.94 is: 841.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,180.10 : 1,767.74 = 561.94 : x
  2. Step 2: Convert to fraction form
    1,180.10/1,767.74 = 561.94/x
  3. Step 3: Cross multiply
    1,180.10x = 1,767.74 × 561.94
  4. Step 4: Simplify right side
    1,180.10x = 993,363.82
  5. Step 5: Solve for x
    x = 993,363.82/1,180.10
  6. Step 6: Final answer
    x = 841.76

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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.