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Finding the Fourth Proportional to 231,708.80, 347,692.80 and 98,566.40

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Solution

The fourth proportional to 231,708.80, 347,692.80 and 98,566.40 is: 147,904.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,708.80 : 347,692.80 = 98,566.40 : x
  2. Step 2: Convert to fraction form
    231,708.80/347,692.80 = 98,566.40/x
  3. Step 3: Cross multiply
    231,708.80x = 347,692.80 × 98,566.40
  4. Step 4: Simplify right side
    231,708.80x = 34,270,827,601.92
  5. Step 5: Solve for x
    x = 34,270,827,601.92/231,708.80
  6. Step 6: Final answer
    x = 147,904.73

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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.