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Finding the Fourth Proportional to 43,312.78, 64,942.44 and 17,005.60

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Solution

The fourth proportional to 43,312.78, 64,942.44 and 17,005.60 is: 25,497.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,312.78 : 64,942.44 = 17,005.60 : x
  2. Step 2: Convert to fraction form
    43,312.78/64,942.44 = 17,005.60/x
  3. Step 3: Cross multiply
    43,312.78x = 64,942.44 × 17,005.60
  4. Step 4: Simplify right side
    43,312.78x = 1,104,385,157.66
  5. Step 5: Solve for x
    x = 1,104,385,157.66/43,312.78
  6. Step 6: Final answer
    x = 25,497.91

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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.