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Finding the Fourth Proportional to 106,032.82, 146,311.11 and 65,731.87

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Solution

The fourth proportional to 106,032.82, 146,311.11 and 65,731.87 is: 90,701.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,032.82 : 146,311.11 = 65,731.87 : x
  2. Step 2: Convert to fraction form
    106,032.82/146,311.11 = 65,731.87/x
  3. Step 3: Cross multiply
    106,032.82x = 146,311.11 × 65,731.87
  4. Step 4: Simplify right side
    106,032.82x = 9,617,302,862.08
  5. Step 5: Solve for x
    x = 9,617,302,862.08/106,032.82
  6. Step 6: Final answer
    x = 90,701.19

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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.