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Finding the Fourth Proportional to 133,067.60, 199,309.80 and 70,665.20

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Solution

The fourth proportional to 133,067.60, 199,309.80 and 70,665.20 is: 105,842.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,067.60 : 199,309.80 = 70,665.20 : x
  2. Step 2: Convert to fraction form
    133,067.60/199,309.80 = 70,665.20/x
  3. Step 3: Cross multiply
    133,067.60x = 199,309.80 × 70,665.20
  4. Step 4: Simplify right side
    133,067.60x = 14,084,266,878.96
  5. Step 5: Solve for x
    x = 14,084,266,878.96/133,067.60
  6. Step 6: Final answer
    x = 105,842.95

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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.