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Finding the Fourth Proportional to 12,060.65, 16,636.33 and 7,972.45

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Solution

The fourth proportional to 12,060.65, 16,636.33 and 7,972.45 is: 10,997.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,060.65 : 16,636.33 = 7,972.45 : x
  2. Step 2: Convert to fraction form
    12,060.65/16,636.33 = 7,972.45/x
  3. Step 3: Cross multiply
    12,060.65x = 16,636.33 × 7,972.45
  4. Step 4: Simplify right side
    12,060.65x = 132,632,309.11
  5. Step 5: Solve for x
    x = 132,632,309.11/12,060.65
  6. Step 6: Final answer
    x = 10,997.11

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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.