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Finding the Fourth Proportional to 52,732.56, 72,769.68 and 28,859.20

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Solution

The fourth proportional to 52,732.56, 72,769.68 and 28,859.20 is: 39,825.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,732.56 : 72,769.68 = 28,859.20 : x
  2. Step 2: Convert to fraction form
    52,732.56/72,769.68 = 28,859.20/x
  3. Step 3: Cross multiply
    52,732.56x = 72,769.68 × 28,859.20
  4. Step 4: Simplify right side
    52,732.56x = 2,100,074,749.06
  5. Step 5: Solve for x
    x = 2,100,074,749.06/52,732.56
  6. Step 6: Final answer
    x = 39,825.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.