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Finding the Fourth Proportional to 53,193.60, 79,660.80 and 25,459.20

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Solution

The fourth proportional to 53,193.60, 79,660.80 and 25,459.20 is: 38,126.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,193.60 : 79,660.80 = 25,459.20 : x
  2. Step 2: Convert to fraction form
    53,193.60/79,660.80 = 25,459.20/x
  3. Step 3: Cross multiply
    53,193.60x = 79,660.80 × 25,459.20
  4. Step 4: Simplify right side
    53,193.60x = 2,028,100,239.36
  5. Step 5: Solve for x
    x = 2,028,100,239.36/53,193.60
  6. Step 6: Final answer
    x = 38,126.77

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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.