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Finding the Fourth Proportional to 127,659.60, 191,035.80 and 111,200.40

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Solution

The fourth proportional to 127,659.60, 191,035.80 and 111,200.40 is: 166,405.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,659.60 : 191,035.80 = 111,200.40 : x
  2. Step 2: Convert to fraction form
    127,659.60/191,035.80 = 111,200.40/x
  3. Step 3: Cross multiply
    127,659.60x = 191,035.80 × 111,200.40
  4. Step 4: Simplify right side
    127,659.60x = 21,243,257,374.32
  5. Step 5: Solve for x
    x = 21,243,257,374.32/127,659.60
  6. Step 6: Final answer
    x = 166,405.48

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1.5x scale

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.