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Finding the Fourth Proportional to 14,708.90, 20,298.42 and 7,994.54

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Solution

The fourth proportional to 14,708.90, 20,298.42 and 7,994.54 is: 11,032.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,708.90 : 20,298.42 = 7,994.54 : x
  2. Step 2: Convert to fraction form
    14,708.90/20,298.42 = 7,994.54/x
  3. Step 3: Cross multiply
    14,708.90x = 20,298.42 × 7,994.54
  4. Step 4: Simplify right side
    14,708.90x = 162,276,516.03
  5. Step 5: Solve for x
    x = 162,276,516.03/14,708.90
  6. Step 6: Final answer
    x = 11,032.54

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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.