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Finding the Fourth Proportional to 14,575.80, 20,114.01 and 8,609.40

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Solution

The fourth proportional to 14,575.80, 20,114.01 and 8,609.40 is: 11,880.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,575.80 : 20,114.01 = 8,609.40 : x
  2. Step 2: Convert to fraction form
    14,575.80/20,114.01 = 8,609.40/x
  3. Step 3: Cross multiply
    14,575.80x = 20,114.01 × 8,609.40
  4. Step 4: Simplify right side
    14,575.80x = 173,169,557.69
  5. Step 5: Solve for x
    x = 173,169,557.69/14,575.80
  6. Step 6: Final answer
    x = 11,880.62

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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.