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Finding the Fourth Proportional to 181,528.40, 271,709.40 and 129,040.40

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Solution

The fourth proportional to 181,528.40, 271,709.40 and 129,040.40 is: 193,146.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,528.40 : 271,709.40 = 129,040.40 : x
  2. Step 2: Convert to fraction form
    181,528.40/271,709.40 = 129,040.40/x
  3. Step 3: Cross multiply
    181,528.40x = 271,709.40 × 129,040.40
  4. Step 4: Simplify right side
    181,528.40x = 35,061,489,659.76
  5. Step 5: Solve for x
    x = 35,061,489,659.76/181,528.40
  6. Step 6: Final answer
    x = 193,146.03

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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.