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Finding the Fourth Proportional to 231,722.80, 347,713.80 and 98,580.40

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Solution

The fourth proportional to 231,722.80, 347,713.80 and 98,580.40 is: 147,925.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,722.80 : 347,713.80 = 98,580.40 : x
  2. Step 2: Convert to fraction form
    231,722.80/347,713.80 = 98,580.40/x
  3. Step 3: Cross multiply
    231,722.80x = 347,713.80 × 98,580.40
  4. Step 4: Simplify right side
    231,722.80x = 34,277,765,489.52
  5. Step 5: Solve for x
    x = 34,277,765,489.52/231,722.80
  6. Step 6: Final answer
    x = 147,925.73

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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.