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Finding the Fourth Proportional to 236,460.80, 354,723.60 and 78,672.80

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Solution

The fourth proportional to 236,460.80, 354,723.60 and 78,672.80 is: 118,019.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,460.80 : 354,723.60 = 78,672.80 : x
  2. Step 2: Convert to fraction form
    236,460.80/354,723.60 = 78,672.80/x
  3. Step 3: Cross multiply
    236,460.80x = 354,723.60 × 78,672.80
  4. Step 4: Simplify right side
    236,460.80x = 27,907,098,838.08
  5. Step 5: Solve for x
    x = 27,907,098,838.08/236,460.80
  6. Step 6: Final answer
    x = 118,019.98

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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.