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Finding the Fourth Proportional to 1,414.50, 1,951.98 and 785.03

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Solution

The fourth proportional to 1,414.50, 1,951.98 and 785.03 is: 1,083.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,414.50 : 1,951.98 = 785.03 : x
  2. Step 2: Convert to fraction form
    1,414.50/1,951.98 = 785.03/x
  3. Step 3: Cross multiply
    1,414.50x = 1,951.98 × 785.03
  4. Step 4: Simplify right side
    1,414.50x = 1,532,353.10
  5. Step 5: Solve for x
    x = 1,532,353.10/1,414.50
  6. Step 6: Final answer
    x = 1,083.32

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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.