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Finding the Fourth Proportional to 235,633.60, 353,623.20 and 156,721.60

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Solution

The fourth proportional to 235,633.60, 353,623.20 and 156,721.60 is: 235,197.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,633.60 : 353,623.20 = 156,721.60 : x
  2. Step 2: Convert to fraction form
    235,633.60/353,623.20 = 156,721.60/x
  3. Step 3: Cross multiply
    235,633.60x = 353,623.20 × 156,721.60
  4. Step 4: Simplify right side
    235,633.60x = 55,420,393,701.12
  5. Step 5: Solve for x
    x = 55,420,393,701.12/235,633.60
  6. Step 6: Final answer
    x = 235,197.33

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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.