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Finding the Fourth Proportional to 12,146.63, 16,769.63 and 7,962.17

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Solution

The fourth proportional to 12,146.63, 16,769.63 and 7,962.17 is: 10,992.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,146.63 : 16,769.63 = 7,962.17 : x
  2. Step 2: Convert to fraction form
    12,146.63/16,769.63 = 7,962.17/x
  3. Step 3: Cross multiply
    12,146.63x = 16,769.63 × 7,962.17
  4. Step 4: Simplify right side
    12,146.63x = 133,522,580.95
  5. Step 5: Solve for x
    x = 133,522,580.95/12,146.63
  6. Step 6: Final answer
    x = 10,992.57

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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.