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Finding the Fourth Proportional to 119,492.64, 164,899.79 and 65,777.38

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Solution

The fourth proportional to 119,492.64, 164,899.79 and 65,777.38 is: 90,772.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,492.64 : 164,899.79 = 65,777.38 : x
  2. Step 2: Convert to fraction form
    119,492.64/164,899.79 = 65,777.38/x
  3. Step 3: Cross multiply
    119,492.64x = 164,899.79 × 65,777.38
  4. Step 4: Simplify right side
    119,492.64x = 10,846,675,488.69
  5. Step 5: Solve for x
    x = 10,846,675,488.69/119,492.64
  6. Step 6: Final answer
    x = 90,772.75

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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.