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Finding the Fourth Proportional to 171,400.80, 257,101.20 and 127,114.05

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Solution

The fourth proportional to 171,400.80, 257,101.20 and 127,114.05 is: 190,671.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,400.80 : 257,101.20 = 127,114.05 : x
  2. Step 2: Convert to fraction form
    171,400.80/257,101.20 = 127,114.05/x
  3. Step 3: Cross multiply
    171,400.80x = 257,101.20 × 127,114.05
  4. Step 4: Simplify right side
    171,400.80x = 32,681,174,791.86
  5. Step 5: Solve for x
    x = 32,681,174,791.86/171,400.80
  6. Step 6: Final answer
    x = 190,671.08

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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.