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Finding the Fourth Proportional to 18,865.76, 26,008.73 and 15,050.34

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Solution

The fourth proportional to 18,865.76, 26,008.73 and 15,050.34 is: 20,748.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,865.76 : 26,008.73 = 15,050.34 : x
  2. Step 2: Convert to fraction form
    18,865.76/26,008.73 = 15,050.34/x
  3. Step 3: Cross multiply
    18,865.76x = 26,008.73 × 15,050.34
  4. Step 4: Simplify right side
    18,865.76x = 391,440,154.22
  5. Step 5: Solve for x
    x = 391,440,154.22/18,865.76
  6. Step 6: Final answer
    x = 20,748.71

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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.