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Finding the Fourth Proportional to 19,655.54, 29,474.49 and 8,556.74

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Solution

The fourth proportional to 19,655.54, 29,474.49 and 8,556.74 is: 12,831.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,655.54 : 29,474.49 = 8,556.74 : x
  2. Step 2: Convert to fraction form
    19,655.54/29,474.49 = 8,556.74/x
  3. Step 3: Cross multiply
    19,655.54x = 29,474.49 × 8,556.74
  4. Step 4: Simplify right side
    19,655.54x = 252,205,547.56
  5. Step 5: Solve for x
    x = 252,205,547.56/19,655.54
  6. Step 6: Final answer
    x = 12,831.27

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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.