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Finding the Fourth Proportional to 90,625.66, 135,938.58 and 34,452.58

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Solution

The fourth proportional to 90,625.66, 135,938.58 and 34,452.58 is: 51,678.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,625.66 : 135,938.58 = 34,452.58 : x
  2. Step 2: Convert to fraction form
    90,625.66/135,938.58 = 34,452.58/x
  3. Step 3: Cross multiply
    90,625.66x = 135,938.58 × 34,452.58
  4. Step 4: Simplify right side
    90,625.66x = 4,683,434,802.54
  5. Step 5: Solve for x
    x = 4,683,434,802.54/90,625.66
  6. Step 6: Final answer
    x = 51,678.90

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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.