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Finding the Fourth Proportional to 127,818, 191,694.60 and 39,048.48

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Solution

The fourth proportional to 127,818, 191,694.60 and 39,048.48 is: 58,562.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,818 : 191,694.60 = 39,048.48 : x
  2. Step 2: Convert to fraction form
    127,818/191,694.60 = 39,048.48/x
  3. Step 3: Cross multiply
    127,818x = 191,694.60 × 39,048.48
  4. Step 4: Simplify right side
    127,818x = 7,485,382,754.21
  5. Step 5: Solve for x
    x = 7,485,382,754.21/127,818
  6. Step 6: Final answer
    x = 58,562.82

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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.