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Finding the Fourth Proportional to 53,956.40, 80,934.60 and 53,610.80

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Solution

The fourth proportional to 53,956.40, 80,934.60 and 53,610.80 is: 80,416.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,956.40 : 80,934.60 = 53,610.80 : x
  2. Step 2: Convert to fraction form
    53,956.40/80,934.60 = 53,610.80/x
  3. Step 3: Cross multiply
    53,956.40x = 80,934.60 × 53,610.80
  4. Step 4: Simplify right side
    53,956.40x = 4,338,968,653.68
  5. Step 5: Solve for x
    x = 4,338,968,653.68/53,956.40
  6. Step 6: Final answer
    x = 80,416.20

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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.