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Finding the Fourth Proportional to 171,498.40, 257,539.20 and 127,175.20

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Solution

The fourth proportional to 171,498.40, 257,539.20 and 127,175.20 is: 190,979.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,498.40 : 257,539.20 = 127,175.20 : x
  2. Step 2: Convert to fraction form
    171,498.40/257,539.20 = 127,175.20/x
  3. Step 3: Cross multiply
    171,498.40x = 257,539.20 × 127,175.20
  4. Step 4: Simplify right side
    171,498.40x = 32,752,599,267.84
  5. Step 5: Solve for x
    x = 32,752,599,267.84/171,498.40
  6. Step 6: Final answer
    x = 190,979.04

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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.