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Finding the Fourth Proportional to 18,953.76, 26,149.35 and 11,295.48

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Solution

The fourth proportional to 18,953.76, 26,149.35 and 11,295.48 is: 15,583.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,953.76 : 26,149.35 = 11,295.48 : x
  2. Step 2: Convert to fraction form
    18,953.76/26,149.35 = 11,295.48/x
  3. Step 3: Cross multiply
    18,953.76x = 26,149.35 × 11,295.48
  4. Step 4: Simplify right side
    18,953.76x = 295,369,459.94
  5. Step 5: Solve for x
    x = 295,369,459.94/18,953.76
  6. Step 6: Final answer
    x = 15,583.69

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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.