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Finding the Fourth Proportional to 1,179.50, 1,627.61 and 655.52

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Solution

The fourth proportional to 1,179.50, 1,627.61 and 655.52 is: 904.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179.50 : 1,627.61 = 655.52 : x
  2. Step 2: Convert to fraction form
    1,179.50/1,627.61 = 655.52/x
  3. Step 3: Cross multiply
    1,179.50x = 1,627.61 × 655.52
  4. Step 4: Simplify right side
    1,179.50x = 1,066,919.49
  5. Step 5: Solve for x
    x = 1,066,919.49/1,179.50
  6. Step 6: Final answer
    x = 904.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.