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Finding the Fourth Proportional to 127,847.16, 191,703.12 and 56,738.88

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Solution

The fourth proportional to 127,847.16, 191,703.12 and 56,738.88 is: 85,078.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,847.16 : 191,703.12 = 56,738.88 : x
  2. Step 2: Convert to fraction form
    127,847.16/191,703.12 = 56,738.88/x
  3. Step 3: Cross multiply
    127,847.16x = 191,703.12 × 56,738.88
  4. Step 4: Simplify right side
    127,847.16x = 10,877,020,321.31
  5. Step 5: Solve for x
    x = 10,877,020,321.31/127,847.16
  6. Step 6: Final answer
    x = 85,078.31

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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.