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Finding the Fourth Proportional to 14,605.27, 21,909.72 and 5,719.45

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Solution

The fourth proportional to 14,605.27, 21,909.72 and 5,719.45 is: 8,579.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,605.27 : 21,909.72 = 5,719.45 : x
  2. Step 2: Convert to fraction form
    14,605.27/21,909.72 = 5,719.45/x
  3. Step 3: Cross multiply
    14,605.27x = 21,909.72 × 5,719.45
  4. Step 4: Simplify right side
    14,605.27x = 125,311,548.05
  5. Step 5: Solve for x
    x = 125,311,548.05/14,605.27
  6. Step 6: Final answer
    x = 8,579.89

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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.