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Finding the Fourth Proportional to 119,967.16, 165,555.92 and 66,253.52

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Solution

The fourth proportional to 119,967.16, 165,555.92 and 66,253.52 is: 91,430.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,967.16 : 165,555.92 = 66,253.52 : x
  2. Step 2: Convert to fraction form
    119,967.16/165,555.92 = 66,253.52/x
  3. Step 3: Cross multiply
    119,967.16x = 165,555.92 × 66,253.52
  4. Step 4: Simplify right side
    119,967.16x = 10,968,662,456.84
  5. Step 5: Solve for x
    x = 10,968,662,456.84/119,967.16
  6. Step 6: Final answer
    x = 91,430.54

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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.