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Finding the Fourth Proportional to 9,762.20, 14,621.70 and 8,034.20

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Solution

The fourth proportional to 9,762.20, 14,621.70 and 8,034.20 is: 12,033.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,762.20 : 14,621.70 = 8,034.20 : x
  2. Step 2: Convert to fraction form
    9,762.20/14,621.70 = 8,034.20/x
  3. Step 3: Cross multiply
    9,762.20x = 14,621.70 × 8,034.20
  4. Step 4: Simplify right side
    9,762.20x = 117,473,662.14
  5. Step 5: Solve for x
    x = 117,473,662.14/9,762.20
  6. Step 6: Final answer
    x = 12,033.52

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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.