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Finding the Fourth Proportional to 117,235.98, 175,669.54 and 90,646.92

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Solution

The fourth proportional to 117,235.98, 175,669.54 and 90,646.92 is: 135,827.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,235.98 : 175,669.54 = 90,646.92 : x
  2. Step 2: Convert to fraction form
    117,235.98/175,669.54 = 90,646.92/x
  3. Step 3: Cross multiply
    117,235.98x = 175,669.54 × 90,646.92
  4. Step 4: Simplify right side
    117,235.98x = 15,923,902,738.82
  5. Step 5: Solve for x
    x = 15,923,902,738.82/117,235.98
  6. Step 6: Final answer
    x = 135,827.78

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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.