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Finding the Fourth Proportional to 18,459.72, 25,474.50 and 10,076.28

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Solution

The fourth proportional to 18,459.72, 25,474.50 and 10,076.28 is: 13,905.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,459.72 : 25,474.50 = 10,076.28 : x
  2. Step 2: Convert to fraction form
    18,459.72/25,474.50 = 10,076.28/x
  3. Step 3: Cross multiply
    18,459.72x = 25,474.50 × 10,076.28
  4. Step 4: Simplify right side
    18,459.72x = 256,688,194.86
  5. Step 5: Solve for x
    x = 256,688,194.86/18,459.72
  6. Step 6: Final answer
    x = 13,905.31

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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.