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Finding the Fourth Proportional to 15,920.45, 23,871.41 and 11,706.22

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Solution

The fourth proportional to 15,920.45, 23,871.41 and 11,706.22 is: 17,552.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,920.45 : 23,871.41 = 11,706.22 : x
  2. Step 2: Convert to fraction form
    15,920.45/23,871.41 = 11,706.22/x
  3. Step 3: Cross multiply
    15,920.45x = 23,871.41 × 11,706.22
  4. Step 4: Simplify right side
    15,920.45x = 279,443,992.38
  5. Step 5: Solve for x
    x = 279,443,992.38/15,920.45
  6. Step 6: Final answer
    x = 17,552.52

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1.5x scale

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.