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Finding the Fourth Proportional to 1,084.86, 1,625.94 and 499.50

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Solution

The fourth proportional to 1,084.86, 1,625.94 and 499.50 is: 748.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,084.86 : 1,625.94 = 499.50 : x
  2. Step 2: Convert to fraction form
    1,084.86/1,625.94 = 499.50/x
  3. Step 3: Cross multiply
    1,084.86x = 1,625.94 × 499.50
  4. Step 4: Simplify right side
    1,084.86x = 812,157.03
  5. Step 5: Solve for x
    x = 812,157.03/1,084.86
  6. Step 6: Final answer
    x = 748.63

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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.