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Finding the Fourth Proportional to 143,817.89, 215,650.84 and 63,821.10

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Solution

The fourth proportional to 143,817.89, 215,650.84 and 63,821.10 is: 95,697.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,817.89 : 215,650.84 = 63,821.10 : x
  2. Step 2: Convert to fraction form
    143,817.89/215,650.84 = 63,821.10/x
  3. Step 3: Cross multiply
    143,817.89x = 215,650.84 × 63,821.10
  4. Step 4: Simplify right side
    143,817.89x = 13,763,074,559.51
  5. Step 5: Solve for x
    x = 13,763,074,559.51/143,817.89
  6. Step 6: Final answer
    x = 95,697.93

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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.