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Finding the Fourth Proportional to 82,999.90, 124,629.45 and 48,007.90

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Solution

The fourth proportional to 82,999.90, 124,629.45 and 48,007.90 is: 72,086.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,999.90 : 124,629.45 = 48,007.90 : x
  2. Step 2: Convert to fraction form
    82,999.90/124,629.45 = 48,007.90/x
  3. Step 3: Cross multiply
    82,999.90x = 124,629.45 × 48,007.90
  4. Step 4: Simplify right side
    82,999.90x = 5,983,198,172.66
  5. Step 5: Solve for x
    x = 5,983,198,172.66/82,999.90
  6. Step 6: Final answer
    x = 72,086.81

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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.