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Finding the Fourth Proportional to 235,215.50, 352,712.48 and 85,350.92

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Solution

The fourth proportional to 235,215.50, 352,712.48 and 85,350.92 is: 127,986.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,215.50 : 352,712.48 = 85,350.92 : x
  2. Step 2: Convert to fraction form
    235,215.50/352,712.48 = 85,350.92/x
  3. Step 3: Cross multiply
    235,215.50x = 352,712.48 × 85,350.92
  4. Step 4: Simplify right side
    235,215.50x = 30,104,332,473.16
  5. Step 5: Solve for x
    x = 30,104,332,473.16/235,215.50
  6. Step 6: Final answer
    x = 127,986.18

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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.