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Finding the Fourth Proportional to 10,375.78, 14,318.62 and 5,660.16

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Solution

The fourth proportional to 10,375.78, 14,318.62 and 5,660.16 is: 7,811.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,375.78 : 14,318.62 = 5,660.16 : x
  2. Step 2: Convert to fraction form
    10,375.78/14,318.62 = 5,660.16/x
  3. Step 3: Cross multiply
    10,375.78x = 14,318.62 × 5,660.16
  4. Step 4: Simplify right side
    10,375.78x = 81,045,680.18
  5. Step 5: Solve for x
    x = 81,045,680.18/10,375.78
  6. Step 6: Final answer
    x = 7,811.04

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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.