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Finding the Fourth Proportional to 91,205.04, 125,856.48 and 53,472

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Solution

The fourth proportional to 91,205.04, 125,856.48 and 53,472 is: 73,787.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,205.04 : 125,856.48 = 53,472 : x
  2. Step 2: Convert to fraction form
    91,205.04/125,856.48 = 53,472/x
  3. Step 3: Cross multiply
    91,205.04x = 125,856.48 × 53,472
  4. Step 4: Simplify right side
    91,205.04x = 6,729,797,698.56
  5. Step 5: Solve for x
    x = 6,729,797,698.56/91,205.04
  6. Step 6: Final answer
    x = 73,787.56

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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.