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Finding the Fourth Proportional to 18,913, 26,100.12 and 10,529.68

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Solution

The fourth proportional to 18,913, 26,100.12 and 10,529.68 is: 14,531.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,913 : 26,100.12 = 10,529.68 : x
  2. Step 2: Convert to fraction form
    18,913/26,100.12 = 10,529.68/x
  3. Step 3: Cross multiply
    18,913x = 26,100.12 × 10,529.68
  4. Step 4: Simplify right side
    18,913x = 274,825,911.56
  5. Step 5: Solve for x
    x = 274,825,911.56/18,913
  6. Step 6: Final answer
    x = 14,531.06

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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.