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Finding the Fourth Proportional to 127,855.20, 191,811.60 and 75,237.60

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Solution

The fourth proportional to 127,855.20, 191,811.60 and 75,237.60 is: 112,873.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,855.20 : 191,811.60 = 75,237.60 : x
  2. Step 2: Convert to fraction form
    127,855.20/191,811.60 = 75,237.60/x
  3. Step 3: Cross multiply
    127,855.20x = 191,811.60 × 75,237.60
  4. Step 4: Simplify right side
    127,855.20x = 14,431,444,436.16
  5. Step 5: Solve for x
    x = 14,431,444,436.16/127,855.20
  6. Step 6: Final answer
    x = 112,873.35

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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.