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Finding the Fourth Proportional to 15,672.87, 23,510.82 and 4,579.31

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Solution

The fourth proportional to 15,672.87, 23,510.82 and 4,579.31 is: 6,869.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,672.87 : 23,510.82 = 4,579.31 : x
  2. Step 2: Convert to fraction form
    15,672.87/23,510.82 = 4,579.31/x
  3. Step 3: Cross multiply
    15,672.87x = 23,510.82 × 4,579.31
  4. Step 4: Simplify right side
    15,672.87x = 107,663,215.58
  5. Step 5: Solve for x
    x = 107,663,215.58/15,672.87
  6. Step 6: Final answer
    x = 6,869.40

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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.