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Finding the Fourth Proportional to 236,436.60, 354,687.30 and 86,640.60

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Solution

The fourth proportional to 236,436.60, 354,687.30 and 86,640.60 is: 129,972.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,436.60 : 354,687.30 = 86,640.60 : x
  2. Step 2: Convert to fraction form
    236,436.60/354,687.30 = 86,640.60/x
  3. Step 3: Cross multiply
    236,436.60x = 354,687.30 × 86,640.60
  4. Step 4: Simplify right side
    236,436.60x = 30,730,320,484.38
  5. Step 5: Solve for x
    x = 30,730,320,484.38/236,436.60
  6. Step 6: Final answer
    x = 129,972.77

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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.