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Finding the Fourth Proportional to 119,571.40, 165,009.59 and 65,858.28

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Solution

The fourth proportional to 119,571.40, 165,009.59 and 65,858.28 is: 90,885.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,571.40 : 165,009.59 = 65,858.28 : x
  2. Step 2: Convert to fraction form
    119,571.40/165,009.59 = 65,858.28/x
  3. Step 3: Cross multiply
    119,571.40x = 165,009.59 × 65,858.28
  4. Step 4: Simplify right side
    119,571.40x = 10,867,247,780.91
  5. Step 5: Solve for x
    x = 10,867,247,780.91/119,571.40
  6. Step 6: Final answer
    x = 90,885.01

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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.