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Finding the Fourth Proportional to 14,765.75, 20,376.43 and 8,051.45

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Solution

The fourth proportional to 14,765.75, 20,376.43 and 8,051.45 is: 11,110.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,765.75 : 20,376.43 = 8,051.45 : x
  2. Step 2: Convert to fraction form
    14,765.75/20,376.43 = 8,051.45/x
  3. Step 3: Cross multiply
    14,765.75x = 20,376.43 × 8,051.45
  4. Step 4: Simplify right side
    14,765.75x = 164,059,810.15
  5. Step 5: Solve for x
    x = 164,059,810.15/14,765.75
  6. Step 6: Final answer
    x = 11,110.83

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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.