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Finding the Fourth Proportional to 25,808.99, 38,647.88 and 23,643.86

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Solution

The fourth proportional to 25,808.99, 38,647.88 and 23,643.86 is: 35,405.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,808.99 : 38,647.88 = 23,643.86 : x
  2. Step 2: Convert to fraction form
    25,808.99/38,647.88 = 23,643.86/x
  3. Step 3: Cross multiply
    25,808.99x = 38,647.88 × 23,643.86
  4. Step 4: Simplify right side
    25,808.99x = 913,785,064.02
  5. Step 5: Solve for x
    x = 913,785,064.02/25,808.99
  6. Step 6: Final answer
    x = 35,405.69

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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.