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Finding the Fourth Proportional to 4,798.50, 7,172.42 and 4,168.86

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Solution

The fourth proportional to 4,798.50, 7,172.42 and 4,168.86 is: 6,231.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,798.50 : 7,172.42 = 4,168.86 : x
  2. Step 2: Convert to fraction form
    4,798.50/7,172.42 = 4,168.86/x
  3. Step 3: Cross multiply
    4,798.50x = 7,172.42 × 4,168.86
  4. Step 4: Simplify right side
    4,798.50x = 29,900,814.84
  5. Step 5: Solve for x
    x = 29,900,814.84/4,798.50
  6. Step 6: Final answer
    x = 6,231.28

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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.