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Finding the Fourth Proportional to 15,793.79, 23,694.32 and 8,405.37

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Solution

The fourth proportional to 15,793.79, 23,694.32 and 8,405.37 is: 12,609.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,793.79 : 23,694.32 = 8,405.37 : x
  2. Step 2: Convert to fraction form
    15,793.79/23,694.32 = 8,405.37/x
  3. Step 3: Cross multiply
    15,793.79x = 23,694.32 × 8,405.37
  4. Step 4: Simplify right side
    15,793.79x = 199,159,547.51
  5. Step 5: Solve for x
    x = 199,159,547.51/15,793.79
  6. Step 6: Final answer
    x = 12,609.99

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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.