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Finding the Fourth Proportional to 19,480.87, 26,885.25 and 10,984.63

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Solution

The fourth proportional to 19,480.87, 26,885.25 and 10,984.63 is: 15,159.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,480.87 : 26,885.25 = 10,984.63 : x
  2. Step 2: Convert to fraction form
    19,480.87/26,885.25 = 10,984.63/x
  3. Step 3: Cross multiply
    19,480.87x = 26,885.25 × 10,984.63
  4. Step 4: Simplify right side
    19,480.87x = 295,324,523.71
  5. Step 5: Solve for x
    x = 295,324,523.71/19,480.87
  6. Step 6: Final answer
    x = 15,159.72

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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.