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Finding the Fourth Proportional to 25,885.47, 38,803.56 and 8,343

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Solution

The fourth proportional to 25,885.47, 38,803.56 and 8,343 is: 12,506.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,885.47 : 38,803.56 = 8,343 : x
  2. Step 2: Convert to fraction form
    25,885.47/38,803.56 = 8,343/x
  3. Step 3: Cross multiply
    25,885.47x = 38,803.56 × 8,343
  4. Step 4: Simplify right side
    25,885.47x = 323,738,069.79
  5. Step 5: Solve for x
    x = 323,738,069.79/25,885.47
  6. Step 6: Final answer
    x = 12,506.55

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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.