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Finding the Fourth Proportional to 10,950.47, 15,111.65 and 5,982.47

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Solution

The fourth proportional to 10,950.47, 15,111.65 and 5,982.47 is: 8,255.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,950.47 : 15,111.65 = 5,982.47 : x
  2. Step 2: Convert to fraction form
    10,950.47/15,111.65 = 5,982.47/x
  3. Step 3: Cross multiply
    10,950.47x = 15,111.65 × 5,982.47
  4. Step 4: Simplify right side
    10,950.47x = 90,404,988.84
  5. Step 5: Solve for x
    x = 90,404,988.84/10,950.47
  6. Step 6: Final answer
    x = 8,255.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.