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Finding the Fourth Proportional to 63,708.64, 95,436.80 and 43,668.80

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Solution

The fourth proportional to 63,708.64, 95,436.80 and 43,668.80 is: 65,416.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,708.64 : 95,436.80 = 43,668.80 : x
  2. Step 2: Convert to fraction form
    63,708.64/95,436.80 = 43,668.80/x
  3. Step 3: Cross multiply
    63,708.64x = 95,436.80 × 43,668.80
  4. Step 4: Simplify right side
    63,708.64x = 4,167,610,531.84
  5. Step 5: Solve for x
    x = 4,167,610,531.84/63,708.64
  6. Step 6: Final answer
    x = 65,416.72

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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.