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Finding the Fourth Proportional to 45,371.60, 68,057.40 and 43,330.40

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Solution

The fourth proportional to 45,371.60, 68,057.40 and 43,330.40 is: 64,995.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,371.60 : 68,057.40 = 43,330.40 : x
  2. Step 2: Convert to fraction form
    45,371.60/68,057.40 = 43,330.40/x
  3. Step 3: Cross multiply
    45,371.60x = 68,057.40 × 43,330.40
  4. Step 4: Simplify right side
    45,371.60x = 2,948,954,364.96
  5. Step 5: Solve for x
    x = 2,948,954,364.96/45,371.60
  6. Step 6: Final answer
    x = 64,995.60

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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.