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Finding the Fourth Proportional to 119,047.62, 164,289.30 and 65,336.16

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Solution

The fourth proportional to 119,047.62, 164,289.30 and 65,336.16 is: 90,165.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,047.62 : 164,289.30 = 65,336.16 : x
  2. Step 2: Convert to fraction form
    119,047.62/164,289.30 = 65,336.16/x
  3. Step 3: Cross multiply
    119,047.62x = 164,289.30 × 65,336.16
  4. Step 4: Simplify right side
    119,047.62x = 10,734,031,991.09
  5. Step 5: Solve for x
    x = 10,734,031,991.09/119,047.62
  6. Step 6: Final answer
    x = 90,165.87

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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.