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Finding the Fourth Proportional to 10,364.16, 15,546 and 4,520.64

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Solution

The fourth proportional to 10,364.16, 15,546 and 4,520.64 is: 6,780.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,364.16 : 15,546 = 4,520.64 : x
  2. Step 2: Convert to fraction form
    10,364.16/15,546 = 4,520.64/x
  3. Step 3: Cross multiply
    10,364.16x = 15,546 × 4,520.64
  4. Step 4: Simplify right side
    10,364.16x = 70,277,869.44
  5. Step 5: Solve for x
    x = 70,277,869.44/10,364.16
  6. Step 6: Final answer
    x = 6,780.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.