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Finding the Fourth Proportional to 91,326.76, 126,030.49 and 51,040.48

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Solution

The fourth proportional to 91,326.76, 126,030.49 and 51,040.48 is: 70,435.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,326.76 : 126,030.49 = 51,040.48 : x
  2. Step 2: Convert to fraction form
    91,326.76/126,030.49 = 51,040.48/x
  3. Step 3: Cross multiply
    91,326.76x = 126,030.49 × 51,040.48
  4. Step 4: Simplify right side
    91,326.76x = 6,432,656,704.24
  5. Step 5: Solve for x
    x = 6,432,656,704.24/91,326.76
  6. Step 6: Final answer
    x = 70,435.62

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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.