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Finding the Fourth Proportional to 143,646.03, 215,369.12 and 63,640.59

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Solution

The fourth proportional to 143,646.03, 215,369.12 and 63,640.59 is: 95,416.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,646.03 : 215,369.12 = 63,640.59 : x
  2. Step 2: Convert to fraction form
    143,646.03/215,369.12 = 63,640.59/x
  3. Step 3: Cross multiply
    143,646.03x = 215,369.12 × 63,640.59
  4. Step 4: Simplify right side
    143,646.03x = 13,706,217,546.38
  5. Step 5: Solve for x
    x = 13,706,217,546.38/143,646.03
  6. Step 6: Final answer
    x = 95,416.61

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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.