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Finding the Fourth Proportional to 25,381.72, 38,076.68 and 8,737.72

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Solution

The fourth proportional to 25,381.72, 38,076.68 and 8,737.72 is: 13,107.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,381.72 : 38,076.68 = 8,737.72 : x
  2. Step 2: Convert to fraction form
    25,381.72/38,076.68 = 8,737.72/x
  3. Step 3: Cross multiply
    25,381.72x = 38,076.68 × 8,737.72
  4. Step 4: Simplify right side
    25,381.72x = 332,703,368.37
  5. Step 5: Solve for x
    x = 332,703,368.37/25,381.72
  6. Step 6: Final answer
    x = 13,107.99

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1.5x scale

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.