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Finding the Fourth Proportional to 19,381.50, 26,746.50 and 10,883.67

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Solution

The fourth proportional to 19,381.50, 26,746.50 and 10,883.67 is: 15,019.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,381.50 : 26,746.50 = 10,883.67 : x
  2. Step 2: Convert to fraction form
    19,381.50/26,746.50 = 10,883.67/x
  3. Step 3: Cross multiply
    19,381.50x = 26,746.50 × 10,883.67
  4. Step 4: Simplify right side
    19,381.50x = 291,100,079.66
  5. Step 5: Solve for x
    x = 291,100,079.66/19,381.50
  6. Step 6: Final answer
    x = 15,019.48

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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.