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Finding the Fourth Proportional to 4,789.76, 7,185.65 and 1,503.18

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Solution

The fourth proportional to 4,789.76, 7,185.65 and 1,503.18 is: 2,255.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,789.76 : 7,185.65 = 1,503.18 : x
  2. Step 2: Convert to fraction form
    4,789.76/7,185.65 = 1,503.18/x
  3. Step 3: Cross multiply
    4,789.76x = 7,185.65 × 1,503.18
  4. Step 4: Simplify right side
    4,789.76x = 10,801,317.85
  5. Step 5: Solve for x
    x = 10,801,317.85/4,789.76
  6. Step 6: Final answer
    x = 2,255.09

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1.5x scale

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.