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Finding the Fourth Proportional to 126,963.96, 175,089.36 and 75,968.64

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Solution

The fourth proportional to 126,963.96, 175,089.36 and 75,968.64 is: 104,764.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,963.96 : 175,089.36 = 75,968.64 : x
  2. Step 2: Convert to fraction form
    126,963.96/175,089.36 = 75,968.64/x
  3. Step 3: Cross multiply
    126,963.96x = 175,089.36 × 75,968.64
  4. Step 4: Simplify right side
    126,963.96x = 13,301,300,557.67
  5. Step 5: Solve for x
    x = 13,301,300,557.67/126,963.96
  6. Step 6: Final answer
    x = 104,764.38

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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.