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Finding the Fourth Proportional to 165,658.80, 248,747.40 and 126,260.40

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Solution

The fourth proportional to 165,658.80, 248,747.40 and 126,260.40 is: 189,588.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,658.80 : 248,747.40 = 126,260.40 : x
  2. Step 2: Convert to fraction form
    165,658.80/248,747.40 = 126,260.40/x
  3. Step 3: Cross multiply
    165,658.80x = 248,747.40 × 126,260.40
  4. Step 4: Simplify right side
    165,658.80x = 31,406,946,222.96
  5. Step 5: Solve for x
    x = 31,406,946,222.96/165,658.80
  6. Step 6: Final answer
    x = 189,588.15

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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.