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Finding the Fourth Proportional to 57,402.40, 79,253.97 and 51,333.82

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Solution

The fourth proportional to 57,402.40, 79,253.97 and 51,333.82 is: 70,875.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,402.40 : 79,253.97 = 51,333.82 : x
  2. Step 2: Convert to fraction form
    57,402.40/79,253.97 = 51,333.82/x
  3. Step 3: Cross multiply
    57,402.40x = 79,253.97 × 51,333.82
  4. Step 4: Simplify right side
    57,402.40x = 4,068,409,321.83
  5. Step 5: Solve for x
    x = 4,068,409,321.83/57,402.40
  6. Step 6: Final answer
    x = 70,875.25

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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.