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Finding the Fourth Proportional to 14,859.60, 20,503.56 and 9,553.20

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Solution

The fourth proportional to 14,859.60, 20,503.56 and 9,553.20 is: 13,181.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,859.60 : 20,503.56 = 9,553.20 : x
  2. Step 2: Convert to fraction form
    14,859.60/20,503.56 = 9,553.20/x
  3. Step 3: Cross multiply
    14,859.60x = 20,503.56 × 9,553.20
  4. Step 4: Simplify right side
    14,859.60x = 195,874,609.39
  5. Step 5: Solve for x
    x = 195,874,609.39/14,859.60
  6. Step 6: Final answer
    x = 13,181.69

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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.