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Finding the Fourth Proportional to 236,431.40, 354,063.90 and 157,116.20

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Solution

The fourth proportional to 236,431.40, 354,063.90 and 157,116.20 is: 235,286.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,431.40 : 354,063.90 = 157,116.20 : x
  2. Step 2: Convert to fraction form
    236,431.40/354,063.90 = 157,116.20/x
  3. Step 3: Cross multiply
    236,431.40x = 354,063.90 × 157,116.20
  4. Step 4: Simplify right side
    236,431.40x = 55,629,174,525.18
  5. Step 5: Solve for x
    x = 55,629,174,525.18/236,431.40
  6. Step 6: Final answer
    x = 235,286.75

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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.