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Finding the Fourth Proportional to 164,431.40, 246,574.20 and 75,639.20

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Solution

The fourth proportional to 164,431.40, 246,574.20 and 75,639.20 is: 113,425.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,431.40 : 246,574.20 = 75,639.20 : x
  2. Step 2: Convert to fraction form
    164,431.40/246,574.20 = 75,639.20/x
  3. Step 3: Cross multiply
    164,431.40x = 246,574.20 × 75,639.20
  4. Step 4: Simplify right side
    164,431.40x = 18,650,675,228.64
  5. Step 5: Solve for x
    x = 18,650,675,228.64/164,431.40
  6. Step 6: Final answer
    x = 113,425.27

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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.