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Finding the Fourth Proportional to 117,237.48, 175,671.79 and 90,648.42

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Solution

The fourth proportional to 117,237.48, 175,671.79 and 90,648.42 is: 135,830.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,237.48 : 175,671.79 = 90,648.42 : x
  2. Step 2: Convert to fraction form
    117,237.48/175,671.79 = 90,648.42/x
  3. Step 3: Cross multiply
    117,237.48x = 175,671.79 × 90,648.42
  4. Step 4: Simplify right side
    117,237.48x = 15,924,370,202.07
  5. Step 5: Solve for x
    x = 15,924,370,202.07/117,237.48
  6. Step 6: Final answer
    x = 135,830.03

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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.