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Finding the Fourth Proportional to 1,176.24, 1,764.37 and 810.93

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Solution

The fourth proportional to 1,176.24, 1,764.37 and 810.93 is: 1,216.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,176.24 : 1,764.37 = 810.93 : x
  2. Step 2: Convert to fraction form
    1,176.24/1,764.37 = 810.93/x
  3. Step 3: Cross multiply
    1,176.24x = 1,764.37 × 810.93
  4. Step 4: Simplify right side
    1,176.24x = 1,430,778.18
  5. Step 5: Solve for x
    x = 1,430,778.18/1,176.24
  6. Step 6: Final answer
    x = 1,216.40

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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.