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Finding the Fourth Proportional to 1,176.88, 1,753.64 and 1,047.64

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Solution

The fourth proportional to 1,176.88, 1,753.64 and 1,047.64 is: 1,561.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,176.88 : 1,753.64 = 1,047.64 : x
  2. Step 2: Convert to fraction form
    1,176.88/1,753.64 = 1,047.64/x
  3. Step 3: Cross multiply
    1,176.88x = 1,753.64 × 1,047.64
  4. Step 4: Simplify right side
    1,176.88x = 1,837,183.41
  5. Step 5: Solve for x
    x = 1,837,183.41/1,176.88
  6. Step 6: Final answer
    x = 1,561.06

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.