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Finding the Fourth Proportional to 171,378.20, 257,067.30 and 153,007.40

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Solution

The fourth proportional to 171,378.20, 257,067.30 and 153,007.40 is: 229,511.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,378.20 : 257,067.30 = 153,007.40 : x
  2. Step 2: Convert to fraction form
    171,378.20/257,067.30 = 153,007.40/x
  3. Step 3: Cross multiply
    171,378.20x = 257,067.30 × 153,007.40
  4. Step 4: Simplify right side
    171,378.20x = 39,333,199,198.02
  5. Step 5: Solve for x
    x = 39,333,199,198.02/171,378.20
  6. Step 6: Final answer
    x = 229,511.10

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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.