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Finding the Fourth Proportional to 18,474.71, 25,495.10 and 10,091.21

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Solution

The fourth proportional to 18,474.71, 25,495.10 and 10,091.21 is: 13,925.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,474.71 : 25,495.10 = 10,091.21 : x
  2. Step 2: Convert to fraction form
    18,474.71/25,495.10 = 10,091.21/x
  3. Step 3: Cross multiply
    18,474.71x = 25,495.10 × 10,091.21
  4. Step 4: Simplify right side
    18,474.71x = 257,276,408.07
  5. Step 5: Solve for x
    x = 257,276,408.07/18,474.71
  6. Step 6: Final answer
    x = 13,925.87

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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.