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Finding the Fourth Proportional to 25,615.91, 38,423.87 and 6,895.99

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Solution

The fourth proportional to 25,615.91, 38,423.87 and 6,895.99 is: 10,343.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,615.91 : 38,423.87 = 6,895.99 : x
  2. Step 2: Convert to fraction form
    25,615.91/38,423.87 = 6,895.99/x
  3. Step 3: Cross multiply
    25,615.91x = 38,423.87 × 6,895.99
  4. Step 4: Simplify right side
    25,615.91x = 264,970,623.28
  5. Step 5: Solve for x
    x = 264,970,623.28/25,615.91
  6. Step 6: Final answer
    x = 10,343.99

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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.