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Finding the Fourth Proportional to 5,916.88, 8,872.80 and 2,021.68

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Solution

The fourth proportional to 5,916.88, 8,872.80 and 2,021.68 is: 3,031.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,916.88 : 8,872.80 = 2,021.68 : x
  2. Step 2: Convert to fraction form
    5,916.88/8,872.80 = 2,021.68/x
  3. Step 3: Cross multiply
    5,916.88x = 8,872.80 × 2,021.68
  4. Step 4: Simplify right side
    5,916.88x = 17,937,962.30
  5. Step 5: Solve for x
    x = 17,937,962.30/5,916.88
  6. Step 6: Final answer
    x = 3,031.66

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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.