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Finding the Fourth Proportional to 5,173.85, 7,721.01 and 4,620.23

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Solution

The fourth proportional to 5,173.85, 7,721.01 and 4,620.23 is: 6,894.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,173.85 : 7,721.01 = 4,620.23 : x
  2. Step 2: Convert to fraction form
    5,173.85/7,721.01 = 4,620.23/x
  3. Step 3: Cross multiply
    5,173.85x = 7,721.01 × 4,620.23
  4. Step 4: Simplify right side
    5,173.85x = 35,672,818.93
  5. Step 5: Solve for x
    x = 35,672,818.93/5,173.85
  6. Step 6: Final answer
    x = 6,894.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.