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Finding the Fourth Proportional to 53,253.28, 79,743.28 and 51,676.68

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Solution

The fourth proportional to 53,253.28, 79,743.28 and 51,676.68 is: 77,382.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,253.28 : 79,743.28 = 51,676.68 : x
  2. Step 2: Convert to fraction form
    53,253.28/79,743.28 = 51,676.68/x
  3. Step 3: Cross multiply
    53,253.28x = 79,743.28 × 51,676.68
  4. Step 4: Simplify right side
    53,253.28x = 4,120,867,962.71
  5. Step 5: Solve for x
    x = 4,120,867,962.71/53,253.28
  6. Step 6: Final answer
    x = 77,382.43

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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.