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Finding the Fourth Proportional to 14,679.76, 20,258.01 and 7,965.34

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Solution

The fourth proportional to 14,679.76, 20,258.01 and 7,965.34 is: 10,992.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,679.76 : 20,258.01 = 7,965.34 : x
  2. Step 2: Convert to fraction form
    14,679.76/20,258.01 = 7,965.34/x
  3. Step 3: Cross multiply
    14,679.76x = 20,258.01 × 7,965.34
  4. Step 4: Simplify right side
    14,679.76x = 161,361,937.37
  5. Step 5: Solve for x
    x = 161,361,937.37/14,679.76
  6. Step 6: Final answer
    x = 10,992.14

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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.