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Finding the Fourth Proportional to 14,523.78, 21,783.61 and 4,661.78

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Solution

The fourth proportional to 14,523.78, 21,783.61 and 4,661.78 is: 6,992.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,523.78 : 21,783.61 = 4,661.78 : x
  2. Step 2: Convert to fraction form
    14,523.78/21,783.61 = 4,661.78/x
  3. Step 3: Cross multiply
    14,523.78x = 21,783.61 × 4,661.78
  4. Step 4: Simplify right side
    14,523.78x = 101,550,451.88
  5. Step 5: Solve for x
    x = 101,550,451.88/14,523.78
  6. Step 6: Final answer
    x = 6,992.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.