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Finding the Fourth Proportional to 14,667.90, 20,241.72 and 7,953.50

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Solution

The fourth proportional to 14,667.90, 20,241.72 and 7,953.50 is: 10,975.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,667.90 : 20,241.72 = 7,953.50 : x
  2. Step 2: Convert to fraction form
    14,667.90/20,241.72 = 7,953.50/x
  3. Step 3: Cross multiply
    14,667.90x = 20,241.72 × 7,953.50
  4. Step 4: Simplify right side
    14,667.90x = 160,992,520.02
  5. Step 5: Solve for x
    x = 160,992,520.02/14,667.90
  6. Step 6: Final answer
    x = 10,975.84

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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.