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Finding the Fourth Proportional to 76,457.52, 105,562.80 and 58,520.52

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Solution

The fourth proportional to 76,457.52, 105,562.80 and 58,520.52 is: 80,797.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,457.52 : 105,562.80 = 58,520.52 : x
  2. Step 2: Convert to fraction form
    76,457.52/105,562.80 = 58,520.52/x
  3. Step 3: Cross multiply
    76,457.52x = 105,562.80 × 58,520.52
  4. Step 4: Simplify right side
    76,457.52x = 6,177,589,948.66
  5. Step 5: Solve for x
    x = 6,177,589,948.66/76,457.52
  6. Step 6: Final answer
    x = 80,797.68

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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.