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Finding the Fourth Proportional to 45,797.40, 68,577.79 and 31,609.64

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Solution

The fourth proportional to 45,797.40, 68,577.79 and 31,609.64 is: 47,332.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,797.40 : 68,577.79 = 31,609.64 : x
  2. Step 2: Convert to fraction form
    45,797.40/68,577.79 = 31,609.64/x
  3. Step 3: Cross multiply
    45,797.40x = 68,577.79 × 31,609.64
  4. Step 4: Simplify right side
    45,797.40x = 2,167,719,405.58
  5. Step 5: Solve for x
    x = 2,167,719,405.58/45,797.40
  6. Step 6: Final answer
    x = 47,332.81

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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.