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Finding the Fourth Proportional to 127,086.59, 190,631.26 and 38,340.87

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Solution

The fourth proportional to 127,086.59, 190,631.26 and 38,340.87 is: 57,511.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,086.59 : 190,631.26 = 38,340.87 : x
  2. Step 2: Convert to fraction form
    127,086.59/190,631.26 = 38,340.87/x
  3. Step 3: Cross multiply
    127,086.59x = 190,631.26 × 38,340.87
  4. Step 4: Simplify right side
    127,086.59x = 7,308,968,357.60
  5. Step 5: Solve for x
    x = 7,308,968,357.60/127,086.59
  6. Step 6: Final answer
    x = 57,511.72

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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.