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Finding the Fourth Proportional to 408,518.88, 612,642.24 and 171,817.44

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Solution

The fourth proportional to 408,518.88, 612,642.24 and 171,817.44 is: 257,668.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,518.88 : 612,642.24 = 171,817.44 : x
  2. Step 2: Convert to fraction form
    408,518.88/612,642.24 = 171,817.44/x
  3. Step 3: Cross multiply
    408,518.88x = 612,642.24 × 171,817.44
  4. Step 4: Simplify right side
    408,518.88x = 105,262,621,312.67
  5. Step 5: Solve for x
    x = 105,262,621,312.67/408,518.88
  6. Step 6: Final answer
    x = 257,668.93

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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.