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Finding the Fourth Proportional to 14,618.87, 20,173.93 and 7,904.46

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Solution

The fourth proportional to 14,618.87, 20,173.93 and 7,904.46 is: 10,908.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,618.87 : 20,173.93 = 7,904.46 : x
  2. Step 2: Convert to fraction form
    14,618.87/20,173.93 = 7,904.46/x
  3. Step 3: Cross multiply
    14,618.87x = 20,173.93 × 7,904.46
  4. Step 4: Simplify right side
    14,618.87x = 159,464,022.73
  5. Step 5: Solve for x
    x = 159,464,022.73/14,618.87
  6. Step 6: Final answer
    x = 10,908.09

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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.