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Finding the Fourth Proportional to 14,693.94, 20,277.72 and 7,979.58

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Solution

The fourth proportional to 14,693.94, 20,277.72 and 7,979.58 is: 11,011.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,693.94 : 20,277.72 = 7,979.58 : x
  2. Step 2: Convert to fraction form
    14,693.94/20,277.72 = 7,979.58/x
  3. Step 3: Cross multiply
    14,693.94x = 20,277.72 × 7,979.58
  4. Step 4: Simplify right side
    14,693.94x = 161,807,688.96
  5. Step 5: Solve for x
    x = 161,807,688.96/14,693.94
  6. Step 6: Final answer
    x = 11,011.87

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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.