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Finding the Fourth Proportional to 7,817.94, 10,790.28 and 4,631.94

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Solution

The fourth proportional to 7,817.94, 10,790.28 and 4,631.94 is: 6,392.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,817.94 : 10,790.28 = 4,631.94 : x
  2. Step 2: Convert to fraction form
    7,817.94/10,790.28 = 4,631.94/x
  3. Step 3: Cross multiply
    7,817.94x = 10,790.28 × 4,631.94
  4. Step 4: Simplify right side
    7,817.94x = 49,979,929.54
  5. Step 5: Solve for x
    x = 49,979,929.54/7,817.94
  6. Step 6: Final answer
    x = 6,392.98

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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.