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Finding the Fourth Proportional to 14,258.64, 19,676.84 and 7,971.02

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Solution

The fourth proportional to 14,258.64, 19,676.84 and 7,971.02 is: 10,999.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,258.64 : 19,676.84 = 7,971.02 : x
  2. Step 2: Convert to fraction form
    14,258.64/19,676.84 = 7,971.02/x
  3. Step 3: Cross multiply
    14,258.64x = 19,676.84 × 7,971.02
  4. Step 4: Simplify right side
    14,258.64x = 156,844,485.18
  5. Step 5: Solve for x
    x = 156,844,485.18/14,258.64
  6. Step 6: Final answer
    x = 10,999.96

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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.