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Finding the Fourth Proportional to 10,372.54, 15,561.90 and 4,829.16

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Solution

The fourth proportional to 10,372.54, 15,561.90 and 4,829.16 is: 7,245.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,372.54 : 15,561.90 = 4,829.16 : x
  2. Step 2: Convert to fraction form
    10,372.54/15,561.90 = 4,829.16/x
  3. Step 3: Cross multiply
    10,372.54x = 15,561.90 × 4,829.16
  4. Step 4: Simplify right side
    10,372.54x = 75,150,905.00
  5. Step 5: Solve for x
    x = 75,150,905.00/10,372.54
  6. Step 6: Final answer
    x = 7,245.18

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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.