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Finding the Fourth Proportional to 168,603.90, 252,905.85 and 115,459.80

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Solution

The fourth proportional to 168,603.90, 252,905.85 and 115,459.80 is: 173,189.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,603.90 : 252,905.85 = 115,459.80 : x
  2. Step 2: Convert to fraction form
    168,603.90/252,905.85 = 115,459.80/x
  3. Step 3: Cross multiply
    168,603.90x = 252,905.85 × 115,459.80
  4. Step 4: Simplify right side
    168,603.90x = 29,200,458,859.83
  5. Step 5: Solve for x
    x = 29,200,458,859.83/168,603.90
  6. Step 6: Final answer
    x = 173,189.70

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1.5x scale

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.