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Finding the Fourth Proportional to 8,668.50, 11,957.67 and 5,312.94

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Solution

The fourth proportional to 8,668.50, 11,957.67 and 5,312.94 is: 7,328.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668.50 : 11,957.67 = 5,312.94 : x
  2. Step 2: Convert to fraction form
    8,668.50/11,957.67 = 5,312.94/x
  3. Step 3: Cross multiply
    8,668.50x = 11,957.67 × 5,312.94
  4. Step 4: Simplify right side
    8,668.50x = 63,530,383.25
  5. Step 5: Solve for x
    x = 63,530,383.25/8,668.50
  6. Step 6: Final answer
    x = 7,328.88

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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.