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Finding the Fourth Proportional to 29,231.21, 40,338.90 and 15,802.43

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Solution

The fourth proportional to 29,231.21, 40,338.90 and 15,802.43 is: 21,807.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,231.21 : 40,338.90 = 15,802.43 : x
  2. Step 2: Convert to fraction form
    29,231.21/40,338.90 = 15,802.43/x
  3. Step 3: Cross multiply
    29,231.21x = 40,338.90 × 15,802.43
  4. Step 4: Simplify right side
    29,231.21x = 637,452,441.83
  5. Step 5: Solve for x
    x = 637,452,441.83/29,231.21
  6. Step 6: Final answer
    x = 21,807.25

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.