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Finding the Fourth Proportional to 18,882.81, 26,059.70 and 11,329.47

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Solution

The fourth proportional to 18,882.81, 26,059.70 and 11,329.47 is: 15,635.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,882.81 : 26,059.70 = 11,329.47 : x
  2. Step 2: Convert to fraction form
    18,882.81/26,059.70 = 11,329.47/x
  3. Step 3: Cross multiply
    18,882.81x = 26,059.70 × 11,329.47
  4. Step 4: Simplify right side
    18,882.81x = 295,242,532.71
  5. Step 5: Solve for x
    x = 295,242,532.71/18,882.81
  6. Step 6: Final answer
    x = 15,635.52

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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.