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Finding the Fourth Proportional to 144,956.88, 217,435.44 and 39,776.64

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Solution

The fourth proportional to 144,956.88, 217,435.44 and 39,776.64 is: 59,664.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,956.88 : 217,435.44 = 39,776.64 : x
  2. Step 2: Convert to fraction form
    144,956.88/217,435.44 = 39,776.64/x
  3. Step 3: Cross multiply
    144,956.88x = 217,435.44 × 39,776.64
  4. Step 4: Simplify right side
    144,956.88x = 8,648,851,220.12
  5. Step 5: Solve for x
    x = 8,648,851,220.12/144,956.88
  6. Step 6: Final answer
    x = 59,664.99

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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.