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Finding the Fourth Proportional to 484,409.28, 726,618 and 168,865.60

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Solution

The fourth proportional to 484,409.28, 726,618 and 168,865.60 is: 253,299.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,409.28 : 726,618 = 168,865.60 : x
  2. Step 2: Convert to fraction form
    484,409.28/726,618 = 168,865.60/x
  3. Step 3: Cross multiply
    484,409.28x = 726,618 × 168,865.60
  4. Step 4: Simplify right side
    484,409.28x = 122,700,784,540.80
  5. Step 5: Solve for x
    x = 122,700,784,540.80/484,409.28
  6. Step 6: Final answer
    x = 253,299.82

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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.