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Finding the Fourth Proportional to 18,305.96, 25,258.14 and 11,931.98

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Solution

The fourth proportional to 18,305.96, 25,258.14 and 11,931.98 is: 16,463.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,305.96 : 25,258.14 = 11,931.98 : x
  2. Step 2: Convert to fraction form
    18,305.96/25,258.14 = 11,931.98/x
  3. Step 3: Cross multiply
    18,305.96x = 25,258.14 × 11,931.98
  4. Step 4: Simplify right side
    18,305.96x = 301,379,495.03
  5. Step 5: Solve for x
    x = 301,379,495.03/18,305.96
  6. Step 6: Final answer
    x = 16,463.47

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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.