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Finding the Fourth Proportional to 18,881.50, 26,056.47 and 10,499.62

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Solution

The fourth proportional to 18,881.50, 26,056.47 and 10,499.62 is: 14,489.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,881.50 : 26,056.47 = 10,499.62 : x
  2. Step 2: Convert to fraction form
    18,881.50/26,056.47 = 10,499.62/x
  3. Step 3: Cross multiply
    18,881.50x = 26,056.47 × 10,499.62
  4. Step 4: Simplify right side
    18,881.50x = 273,583,033.54
  5. Step 5: Solve for x
    x = 273,583,033.54/18,881.50
  6. Step 6: Final answer
    x = 14,489.48

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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.