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Finding the Fourth Proportional to 171,489.40, 257,525.70 and 127,166.20

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Solution

The fourth proportional to 171,489.40, 257,525.70 and 127,166.20 is: 190,965.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,489.40 : 257,525.70 = 127,166.20 : x
  2. Step 2: Convert to fraction form
    171,489.40/257,525.70 = 127,166.20/x
  3. Step 3: Cross multiply
    171,489.40x = 257,525.70 × 127,166.20
  4. Step 4: Simplify right side
    171,489.40x = 32,748,564,671.34
  5. Step 5: Solve for x
    x = 32,748,564,671.34/171,489.40
  6. Step 6: Final answer
    x = 190,965.53

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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.