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Finding the Fourth Proportional to 14,659.88, 20,230.60 and 7,945.52

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Solution

The fourth proportional to 14,659.88, 20,230.60 and 7,945.52 is: 10,964.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,659.88 : 20,230.60 = 7,945.52 : x
  2. Step 2: Convert to fraction form
    14,659.88/20,230.60 = 7,945.52/x
  3. Step 3: Cross multiply
    14,659.88x = 20,230.60 × 7,945.52
  4. Step 4: Simplify right side
    14,659.88x = 160,742,636.91
  5. Step 5: Solve for x
    x = 160,742,636.91/14,659.88
  6. Step 6: Final answer
    x = 10,964.80

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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.