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Finding the Fourth Proportional to 172,003.40, 257,786.40 and 153,195.20

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Solution

The fourth proportional to 172,003.40, 257,786.40 and 153,195.20 is: 229,598.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,003.40 : 257,786.40 = 153,195.20 : x
  2. Step 2: Convert to fraction form
    172,003.40/257,786.40 = 153,195.20/x
  3. Step 3: Cross multiply
    172,003.40x = 257,786.40 × 153,195.20
  4. Step 4: Simplify right side
    172,003.40x = 39,491,639,105.28
  5. Step 5: Solve for x
    x = 39,491,639,105.28/172,003.40
  6. Step 6: Final answer
    x = 229,598.01

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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.