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Finding the Fourth Proportional to 25,388.48, 35,002.50 and 20,834.48

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Solution

The fourth proportional to 25,388.48, 35,002.50 and 20,834.48 is: 28,724.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,388.48 : 35,002.50 = 20,834.48 : x
  2. Step 2: Convert to fraction form
    25,388.48/35,002.50 = 20,834.48/x
  3. Step 3: Cross multiply
    25,388.48x = 35,002.50 × 20,834.48
  4. Step 4: Simplify right side
    25,388.48x = 729,258,886.20
  5. Step 5: Solve for x
    x = 729,258,886.20/25,388.48
  6. Step 6: Final answer
    x = 28,724.01

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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.