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Finding the Fourth Proportional to 1,144.50, 1,716.88 and 414.02

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Solution

The fourth proportional to 1,144.50, 1,716.88 and 414.02 is: 621.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,144.50 : 1,716.88 = 414.02 : x
  2. Step 2: Convert to fraction form
    1,144.50/1,716.88 = 414.02/x
  3. Step 3: Cross multiply
    1,144.50x = 1,716.88 × 414.02
  4. Step 4: Simplify right side
    1,144.50x = 710,822.66
  5. Step 5: Solve for x
    x = 710,822.66/1,144.50
  6. Step 6: Final answer
    x = 621.08

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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.