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Finding the Fourth Proportional to 127,760.60, 191,498.34 and 56,697.68

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Solution

The fourth proportional to 127,760.60, 191,498.34 and 56,697.68 is: 84,983.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,760.60 : 191,498.34 = 56,697.68 : x
  2. Step 2: Convert to fraction form
    127,760.60/191,498.34 = 56,697.68/x
  3. Step 3: Cross multiply
    127,760.60x = 191,498.34 × 56,697.68
  4. Step 4: Simplify right side
    127,760.60x = 10,857,511,601.85
  5. Step 5: Solve for x
    x = 10,857,511,601.85/127,760.60
  6. Step 6: Final answer
    x = 84,983.25

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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.