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Finding the Fourth Proportional to 127,655.60, 191,029.80 and 111,196.40

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Solution

The fourth proportional to 127,655.60, 191,029.80 and 111,196.40 is: 166,399.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,655.60 : 191,029.80 = 111,196.40 : x
  2. Step 2: Convert to fraction form
    127,655.60/191,029.80 = 111,196.40/x
  3. Step 3: Cross multiply
    127,655.60x = 191,029.80 × 111,196.40
  4. Step 4: Simplify right side
    127,655.60x = 21,241,826,052.72
  5. Step 5: Solve for x
    x = 21,241,826,052.72/127,655.60
  6. Step 6: Final answer
    x = 166,399.48

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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.