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Finding the Fourth Proportional to 45,903.20, 68,725.20 and 44,607.20

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Solution

The fourth proportional to 45,903.20, 68,725.20 and 44,607.20 is: 66,784.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,903.20 : 68,725.20 = 44,607.20 : x
  2. Step 2: Convert to fraction form
    45,903.20/68,725.20 = 44,607.20/x
  3. Step 3: Cross multiply
    45,903.20x = 68,725.20 × 44,607.20
  4. Step 4: Simplify right side
    45,903.20x = 3,065,638,741.44
  5. Step 5: Solve for x
    x = 3,065,638,741.44/45,903.20
  6. Step 6: Final answer
    x = 66,784.86

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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.