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Finding the Fourth Proportional to 119,707.60, 165,189.36 and 65,994.88

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Solution

The fourth proportional to 119,707.60, 165,189.36 and 65,994.88 is: 91,069.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,707.60 : 165,189.36 = 65,994.88 : x
  2. Step 2: Convert to fraction form
    119,707.60/165,189.36 = 65,994.88/x
  3. Step 3: Cross multiply
    119,707.60x = 165,189.36 × 65,994.88
  4. Step 4: Simplify right side
    119,707.60x = 10,901,651,990.48
  5. Step 5: Solve for x
    x = 10,901,651,990.48/119,707.60
  6. Step 6: Final answer
    x = 91,069.00

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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.