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Finding the Fourth Proportional to 251,179.60, 376,186.20 and 171,864.40

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Solution

The fourth proportional to 251,179.60, 376,186.20 and 171,864.40 is: 257,397.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,179.60 : 376,186.20 = 171,864.40 : x
  2. Step 2: Convert to fraction form
    251,179.60/376,186.20 = 171,864.40/x
  3. Step 3: Cross multiply
    251,179.60x = 376,186.20 × 171,864.40
  4. Step 4: Simplify right side
    251,179.60x = 64,653,015,551.28
  5. Step 5: Solve for x
    x = 64,653,015,551.28/251,179.60
  6. Step 6: Final answer
    x = 257,397.56

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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.