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Finding the Fourth Proportional to 119,604.80, 165,056.74 and 65,889.45

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Solution

The fourth proportional to 119,604.80, 165,056.74 and 65,889.45 is: 90,928.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,604.80 : 165,056.74 = 65,889.45 : x
  2. Step 2: Convert to fraction form
    119,604.80/165,056.74 = 65,889.45/x
  3. Step 3: Cross multiply
    119,604.80x = 165,056.74 × 65,889.45
  4. Step 4: Simplify right side
    119,604.80x = 10,875,497,652.67
  5. Step 5: Solve for x
    x = 10,875,497,652.67/119,604.80
  6. Step 6: Final answer
    x = 90,928.60

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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.