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Finding the Fourth Proportional to 51,286.18, 70,719.13 and 33,347.92

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Solution

The fourth proportional to 51,286.18, 70,719.13 and 33,347.92 is: 45,983.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,286.18 : 70,719.13 = 33,347.92 : x
  2. Step 2: Convert to fraction form
    51,286.18/70,719.13 = 33,347.92/x
  3. Step 3: Cross multiply
    51,286.18x = 70,719.13 × 33,347.92
  4. Step 4: Simplify right side
    51,286.18x = 2,358,335,889.71
  5. Step 5: Solve for x
    x = 2,358,335,889.71/51,286.18
  6. Step 6: Final answer
    x = 45,983.85

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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.