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Finding the Fourth Proportional to 14,665.58, 20,238.64 and 7,951.19

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Solution

The fourth proportional to 14,665.58, 20,238.64 and 7,951.19 is: 10,972.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,665.58 : 20,238.64 = 7,951.19 : x
  2. Step 2: Convert to fraction form
    14,665.58/20,238.64 = 7,951.19/x
  3. Step 3: Cross multiply
    14,665.58x = 20,238.64 × 7,951.19
  4. Step 4: Simplify right side
    14,665.58x = 160,921,271.98
  5. Step 5: Solve for x
    x = 160,921,271.98/14,665.58
  6. Step 6: Final answer
    x = 10,972.72

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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.