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Finding the Fourth Proportional to 82,883.50, 124,362.26 and 43,431.50

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Solution

The fourth proportional to 82,883.50, 124,362.26 and 43,431.50 is: 65,166.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,883.50 : 124,362.26 = 43,431.50 : x
  2. Step 2: Convert to fraction form
    82,883.50/124,362.26 = 43,431.50/x
  3. Step 3: Cross multiply
    82,883.50x = 124,362.26 × 43,431.50
  4. Step 4: Simplify right side
    82,883.50x = 5,401,239,495.19
  5. Step 5: Solve for x
    x = 5,401,239,495.19/82,883.50
  6. Step 6: Final answer
    x = 65,166.64

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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.