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Finding the Fourth Proportional to 171,811.20, 257,716.80 and 101,654.40

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Solution

The fourth proportional to 171,811.20, 257,716.80 and 101,654.40 is: 152,481.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,811.20 : 257,716.80 = 101,654.40 : x
  2. Step 2: Convert to fraction form
    171,811.20/257,716.80 = 101,654.40/x
  3. Step 3: Cross multiply
    171,811.20x = 257,716.80 × 101,654.40
  4. Step 4: Simplify right side
    171,811.20x = 26,198,046,673.92
  5. Step 5: Solve for x
    x = 26,198,046,673.92/171,811.20
  6. Step 6: Final answer
    x = 152,481.60

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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.