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Finding the Fourth Proportional to 78,656.80, 118,004.40 and 23,252.80

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Solution

The fourth proportional to 78,656.80, 118,004.40 and 23,252.80 is: 34,884.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,656.80 : 118,004.40 = 23,252.80 : x
  2. Step 2: Convert to fraction form
    78,656.80/118,004.40 = 23,252.80/x
  3. Step 3: Cross multiply
    78,656.80x = 118,004.40 × 23,252.80
  4. Step 4: Simplify right side
    78,656.80x = 2,743,932,712.32
  5. Step 5: Solve for x
    x = 2,743,932,712.32/78,656.80
  6. Step 6: Final answer
    x = 34,884.88

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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.