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Finding the Fourth Proportional to 18,833.76, 25,990.72 and 10,450.24

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Solution

The fourth proportional to 18,833.76, 25,990.72 and 10,450.24 is: 14,421.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,833.76 : 25,990.72 = 10,450.24 : x
  2. Step 2: Convert to fraction form
    18,833.76/25,990.72 = 10,450.24/x
  3. Step 3: Cross multiply
    18,833.76x = 25,990.72 × 10,450.24
  4. Step 4: Simplify right side
    18,833.76x = 271,609,261.77
  5. Step 5: Solve for x
    x = 271,609,261.77/18,833.76
  6. Step 6: Final answer
    x = 14,421.40

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1.5x scale

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.