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Finding the Fourth Proportional to 16,663.66, 25,007.86 and 7,898.60

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Solution

The fourth proportional to 16,663.66, 25,007.86 and 7,898.60 is: 11,853.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,663.66 : 25,007.86 = 7,898.60 : x
  2. Step 2: Convert to fraction form
    16,663.66/25,007.86 = 7,898.60/x
  3. Step 3: Cross multiply
    16,663.66x = 25,007.86 × 7,898.60
  4. Step 4: Simplify right side
    16,663.66x = 197,527,083.00
  5. Step 5: Solve for x
    x = 197,527,083.00/16,663.66
  6. Step 6: Final answer
    x = 11,853.76

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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.