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Finding the Fourth Proportional to 8,667.12, 11,960.64 and 4,941.12

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Solution

The fourth proportional to 8,667.12, 11,960.64 and 4,941.12 is: 6,818.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,667.12 : 11,960.64 = 4,941.12 : x
  2. Step 2: Convert to fraction form
    8,667.12/11,960.64 = 4,941.12/x
  3. Step 3: Cross multiply
    8,667.12x = 11,960.64 × 4,941.12
  4. Step 4: Simplify right side
    8,667.12x = 59,098,957.52
  5. Step 5: Solve for x
    x = 59,098,957.52/8,667.12
  6. Step 6: Final answer
    x = 6,818.75

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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.