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Finding the Fourth Proportional to 48,915.60, 73,308.60 and 43,342.80

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Solution

The fourth proportional to 48,915.60, 73,308.60 and 43,342.80 is: 64,956.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,915.60 : 73,308.60 = 43,342.80 : x
  2. Step 2: Convert to fraction form
    48,915.60/73,308.60 = 43,342.80/x
  3. Step 3: Cross multiply
    48,915.60x = 73,308.60 × 43,342.80
  4. Step 4: Simplify right side
    48,915.60x = 3,177,399,988.08
  5. Step 5: Solve for x
    x = 3,177,399,988.08/48,915.60
  6. Step 6: Final answer
    x = 64,956.78

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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.