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Finding the Fourth Proportional to 10,412.45, 14,369.54 and 5,696.73

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Solution

The fourth proportional to 10,412.45, 14,369.54 and 5,696.73 is: 7,861.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,412.45 : 14,369.54 = 5,696.73 : x
  2. Step 2: Convert to fraction form
    10,412.45/14,369.54 = 5,696.73/x
  3. Step 3: Cross multiply
    10,412.45x = 14,369.54 × 5,696.73
  4. Step 4: Simplify right side
    10,412.45x = 81,859,420.11
  5. Step 5: Solve for x
    x = 81,859,420.11/10,412.45
  6. Step 6: Final answer
    x = 7,861.69

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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.