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Finding the Fourth Proportional to 10,790.92, 14,890.45 and 7,959.84

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Solution

The fourth proportional to 10,790.92, 14,890.45 and 7,959.84 is: 10,983.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,790.92 : 14,890.45 = 7,959.84 : x
  2. Step 2: Convert to fraction form
    10,790.92/14,890.45 = 7,959.84/x
  3. Step 3: Cross multiply
    10,790.92x = 14,890.45 × 7,959.84
  4. Step 4: Simplify right side
    10,790.92x = 118,525,599.53
  5. Step 5: Solve for x
    x = 118,525,599.53/10,790.92
  6. Step 6: Final answer
    x = 10,983.83

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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.