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Finding the Fourth Proportional to 56,872.84, 85,272.76 and 23,615.86

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Solution

The fourth proportional to 56,872.84, 85,272.76 and 23,615.86 is: 35,408.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,872.84 : 85,272.76 = 23,615.86 : x
  2. Step 2: Convert to fraction form
    56,872.84/85,272.76 = 23,615.86/x
  3. Step 3: Cross multiply
    56,872.84x = 85,272.76 × 23,615.86
  4. Step 4: Simplify right side
    56,872.84x = 2,013,789,561.97
  5. Step 5: Solve for x
    x = 2,013,789,561.97/56,872.84
  6. Step 6: Final answer
    x = 35,408.63

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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.