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Finding the Fourth Proportional to 70,100.80, 104,920.80 and 54,433.60

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Solution

The fourth proportional to 70,100.80, 104,920.80 and 54,433.60 is: 81,471.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,100.80 : 104,920.80 = 54,433.60 : x
  2. Step 2: Convert to fraction form
    70,100.80/104,920.80 = 54,433.60/x
  3. Step 3: Cross multiply
    70,100.80x = 104,920.80 × 54,433.60
  4. Step 4: Simplify right side
    70,100.80x = 5,711,216,858.88
  5. Step 5: Solve for x
    x = 5,711,216,858.88/70,100.80
  6. Step 6: Final answer
    x = 81,471.49

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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.