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Finding the Fourth Proportional to 127,873.14, 191,636.13 and 67,886.46

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Solution

The fourth proportional to 127,873.14, 191,636.13 and 67,886.46 is: 101,737.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,873.14 : 191,636.13 = 67,886.46 : x
  2. Step 2: Convert to fraction form
    127,873.14/191,636.13 = 67,886.46/x
  3. Step 3: Cross multiply
    127,873.14x = 191,636.13 × 67,886.46
  4. Step 4: Simplify right side
    127,873.14x = 13,009,498,473.80
  5. Step 5: Solve for x
    x = 13,009,498,473.80/127,873.14
  6. Step 6: Final answer
    x = 101,737.54

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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.