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Finding the Fourth Proportional to 25,833.64, 38,746.80 and 8,301.20

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Solution

The fourth proportional to 25,833.64, 38,746.80 and 8,301.20 is: 12,450.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,833.64 : 38,746.80 = 8,301.20 : x
  2. Step 2: Convert to fraction form
    25,833.64/38,746.80 = 8,301.20/x
  3. Step 3: Cross multiply
    25,833.64x = 38,746.80 × 8,301.20
  4. Step 4: Simplify right side
    25,833.64x = 321,644,936.16
  5. Step 5: Solve for x
    x = 321,644,936.16/25,833.64
  6. Step 6: Final answer
    x = 12,450.62

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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.