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Finding the Fourth Proportional to 104,806.40, 157,065.60 and 67,251.20

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Solution

The fourth proportional to 104,806.40, 157,065.60 and 67,251.20 is: 100,784.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,806.40 : 157,065.60 = 67,251.20 : x
  2. Step 2: Convert to fraction form
    104,806.40/157,065.60 = 67,251.20/x
  3. Step 3: Cross multiply
    104,806.40x = 157,065.60 × 67,251.20
  4. Step 4: Simplify right side
    104,806.40x = 10,562,850,078.72
  5. Step 5: Solve for x
    x = 10,562,850,078.72/104,806.40
  6. Step 6: Final answer
    x = 100,784.40

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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.