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Finding the Fourth Proportional to 171,864.60, 257,796.90 and 47,218.20

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Solution

The fourth proportional to 171,864.60, 257,796.90 and 47,218.20 is: 70,827.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,864.60 : 257,796.90 = 47,218.20 : x
  2. Step 2: Convert to fraction form
    171,864.60/257,796.90 = 47,218.20/x
  3. Step 3: Cross multiply
    171,864.60x = 257,796.90 × 47,218.20
  4. Step 4: Simplify right side
    171,864.60x = 12,172,705,583.58
  5. Step 5: Solve for x
    x = 12,172,705,583.58/171,864.60
  6. Step 6: Final answer
    x = 70,827.30

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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.