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Finding the Fourth Proportional to 127,906.80, 191,788.20 and 49,023.60

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Solution

The fourth proportional to 127,906.80, 191,788.20 and 49,023.60 is: 73,507.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,906.80 : 191,788.20 = 49,023.60 : x
  2. Step 2: Convert to fraction form
    127,906.80/191,788.20 = 49,023.60/x
  3. Step 3: Cross multiply
    127,906.80x = 191,788.20 × 49,023.60
  4. Step 4: Simplify right side
    127,906.80x = 9,402,148,001.52
  5. Step 5: Solve for x
    x = 9,402,148,001.52/127,906.80
  6. Step 6: Final answer
    x = 73,507.80

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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.