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Finding the Fourth Proportional to 51,660.48, 77,524.80 and 18,828.48

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Solution

The fourth proportional to 51,660.48, 77,524.80 and 18,828.48 is: 28,255.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,660.48 : 77,524.80 = 18,828.48 : x
  2. Step 2: Convert to fraction form
    51,660.48/77,524.80 = 18,828.48/x
  3. Step 3: Cross multiply
    51,660.48x = 77,524.80 × 18,828.48
  4. Step 4: Simplify right side
    51,660.48x = 1,459,674,146.30
  5. Step 5: Solve for x
    x = 1,459,674,146.30/51,660.48
  6. Step 6: Final answer
    x = 28,255.14

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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.