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Finding the Fourth Proportional to 119,178.64, 164,466.40 and 65,463.64

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Solution

The fourth proportional to 119,178.64, 164,466.40 and 65,463.64 is: 90,339.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,178.64 : 164,466.40 = 65,463.64 : x
  2. Step 2: Convert to fraction form
    119,178.64/164,466.40 = 65,463.64/x
  3. Step 3: Cross multiply
    119,178.64x = 164,466.40 × 65,463.64
  4. Step 4: Simplify right side
    119,178.64x = 10,766,569,201.70
  5. Step 5: Solve for x
    x = 10,766,569,201.70/119,178.64
  6. Step 6: Final answer
    x = 90,339.76

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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.