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Finding the Fourth Proportional to 117,072.80, 175,090.80 and 98,410.40

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Solution

The fourth proportional to 117,072.80, 175,090.80 and 98,410.40 is: 147,179.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,072.80 : 175,090.80 = 98,410.40 : x
  2. Step 2: Convert to fraction form
    117,072.80/175,090.80 = 98,410.40/x
  3. Step 3: Cross multiply
    117,072.80x = 175,090.80 × 98,410.40
  4. Step 4: Simplify right side
    117,072.80x = 17,230,755,664.32
  5. Step 5: Solve for x
    x = 17,230,755,664.32/117,072.80
  6. Step 6: Final answer
    x = 147,179.84

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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.