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Finding the Fourth Proportional to 88,419.85, 122,019.40 and 48,133.91

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Solution

The fourth proportional to 88,419.85, 122,019.40 and 48,133.91 is: 66,424.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,419.85 : 122,019.40 = 48,133.91 : x
  2. Step 2: Convert to fraction form
    88,419.85/122,019.40 = 48,133.91/x
  3. Step 3: Cross multiply
    88,419.85x = 122,019.40 × 48,133.91
  4. Step 4: Simplify right side
    88,419.85x = 5,873,271,183.07
  5. Step 5: Solve for x
    x = 5,873,271,183.07/88,419.85
  6. Step 6: Final answer
    x = 66,424.81

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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.