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Finding the Fourth Proportional to 104,239.88, 143,851.01 and 56,493.23

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Solution

The fourth proportional to 104,239.88, 143,851.01 and 56,493.23 is: 77,960.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,239.88 : 143,851.01 = 56,493.23 : x
  2. Step 2: Convert to fraction form
    104,239.88/143,851.01 = 56,493.23/x
  3. Step 3: Cross multiply
    104,239.88x = 143,851.01 × 56,493.23
  4. Step 4: Simplify right side
    104,239.88x = 8,126,608,001.10
  5. Step 5: Solve for x
    x = 8,126,608,001.10/104,239.88
  6. Step 6: Final answer
    x = 77,960.64

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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.