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Finding the Fourth Proportional to 8,651.80, 11,935.78 and 5,293.54

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Solution

The fourth proportional to 8,651.80, 11,935.78 and 5,293.54 is: 7,302.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,651.80 : 11,935.78 = 5,293.54 : x
  2. Step 2: Convert to fraction form
    8,651.80/11,935.78 = 5,293.54/x
  3. Step 3: Cross multiply
    8,651.80x = 11,935.78 × 5,293.54
  4. Step 4: Simplify right side
    8,651.80x = 63,182,528.86
  5. Step 5: Solve for x
    x = 63,182,528.86/8,651.80
  6. Step 6: Final answer
    x = 7,302.82

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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.