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Finding the Fourth Proportional to 53,769.60, 80,643.60 and 25,689.60

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Solution

The fourth proportional to 53,769.60, 80,643.60 and 25,689.60 is: 38,529.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,769.60 : 80,643.60 = 25,689.60 : x
  2. Step 2: Convert to fraction form
    53,769.60/80,643.60 = 25,689.60/x
  3. Step 3: Cross multiply
    53,769.60x = 80,643.60 × 25,689.60
  4. Step 4: Simplify right side
    53,769.60x = 2,071,701,826.56
  5. Step 5: Solve for x
    x = 2,071,701,826.56/53,769.60
  6. Step 6: Final answer
    x = 38,529.24

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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.