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Finding the Fourth Proportional to 80,062.51, 119,977.11 and 54,673.87

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Solution

The fourth proportional to 80,062.51, 119,977.11 and 54,673.87 is: 81,931.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,062.51 : 119,977.11 = 54,673.87 : x
  2. Step 2: Convert to fraction form
    80,062.51/119,977.11 = 54,673.87/x
  3. Step 3: Cross multiply
    80,062.51x = 119,977.11 × 54,673.87
  4. Step 4: Simplify right side
    80,062.51x = 6,559,612,915.12
  5. Step 5: Solve for x
    x = 6,559,612,915.12/80,062.51
  6. Step 6: Final answer
    x = 81,931.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.