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Finding the Fourth Proportional to 126,682.31, 174,823.80 and 69,326.72

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Solution

The fourth proportional to 126,682.31, 174,823.80 and 69,326.72 is: 95,672.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,682.31 : 174,823.80 = 69,326.72 : x
  2. Step 2: Convert to fraction form
    126,682.31/174,823.80 = 69,326.72/x
  3. Step 3: Cross multiply
    126,682.31x = 174,823.80 × 69,326.72
  4. Step 4: Simplify right side
    126,682.31x = 12,119,960,543.39
  5. Step 5: Solve for x
    x = 12,119,960,543.39/126,682.31
  6. Step 6: Final answer
    x = 95,672.08

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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.