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Finding the Fourth Proportional to 119,807.81, 165,334.95 and 66,092.72

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Solution

The fourth proportional to 119,807.81, 165,334.95 and 66,092.72 is: 91,208.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,807.81 : 165,334.95 = 66,092.72 : x
  2. Step 2: Convert to fraction form
    119,807.81/165,334.95 = 66,092.72/x
  3. Step 3: Cross multiply
    119,807.81x = 165,334.95 × 66,092.72
  4. Step 4: Simplify right side
    119,807.81x = 10,927,436,556.56
  5. Step 5: Solve for x
    x = 10,927,436,556.56/119,807.81
  6. Step 6: Final answer
    x = 91,208.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.