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Finding the Fourth Proportional to 9,621, 13,282.49 and 7,334.38

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Solution

The fourth proportional to 9,621, 13,282.49 and 7,334.38 is: 10,125.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,621 : 13,282.49 = 7,334.38 : x
  2. Step 2: Convert to fraction form
    9,621/13,282.49 = 7,334.38/x
  3. Step 3: Cross multiply
    9,621x = 13,282.49 × 7,334.38
  4. Step 4: Simplify right side
    9,621x = 97,418,829.01
  5. Step 5: Solve for x
    x = 97,418,829.01/9,621
  6. Step 6: Final answer
    x = 10,125.64

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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.