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Finding the Fourth Proportional to 127,335.20, 191,041.20 and 68,199.20

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Solution

The fourth proportional to 127,335.20, 191,041.20 and 68,199.20 is: 102,319.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,335.20 : 191,041.20 = 68,199.20 : x
  2. Step 2: Convert to fraction form
    127,335.20/191,041.20 = 68,199.20/x
  3. Step 3: Cross multiply
    127,335.20x = 191,041.20 × 68,199.20
  4. Step 4: Simplify right side
    127,335.20x = 13,028,857,007.04
  5. Step 5: Solve for x
    x = 13,028,857,007.04/127,335.20
  6. Step 6: Final answer
    x = 102,319.37

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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.