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Finding the Fourth Proportional to 25,990.56, 38,987.04 and 7,014.96

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Solution

The fourth proportional to 25,990.56, 38,987.04 and 7,014.96 is: 10,522.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,990.56 : 38,987.04 = 7,014.96 : x
  2. Step 2: Convert to fraction form
    25,990.56/38,987.04 = 7,014.96/x
  3. Step 3: Cross multiply
    25,990.56x = 38,987.04 × 7,014.96
  4. Step 4: Simplify right side
    25,990.56x = 273,492,526.12
  5. Step 5: Solve for x
    x = 273,492,526.12/25,990.56
  6. Step 6: Final answer
    x = 10,522.76

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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.