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Finding the Fourth Proportional to 174,679.65, 261,832.65 and 90,354.96

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Solution

The fourth proportional to 174,679.65, 261,832.65 and 90,354.96 is: 135,435.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,679.65 : 261,832.65 = 90,354.96 : x
  2. Step 2: Convert to fraction form
    174,679.65/261,832.65 = 90,354.96/x
  3. Step 3: Cross multiply
    174,679.65x = 261,832.65 × 90,354.96
  4. Step 4: Simplify right side
    174,679.65x = 23,657,878,617.44
  5. Step 5: Solve for x
    x = 23,657,878,617.44/174,679.65
  6. Step 6: Final answer
    x = 135,435.80

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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.