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Finding the Fourth Proportional to 132,491.71, 182,840.91 and 72,063.68

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Solution

The fourth proportional to 132,491.71, 182,840.91 and 72,063.68 is: 99,449.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,491.71 : 182,840.91 = 72,063.68 : x
  2. Step 2: Convert to fraction form
    132,491.71/182,840.91 = 72,063.68/x
  3. Step 3: Cross multiply
    132,491.71x = 182,840.91 × 72,063.68
  4. Step 4: Simplify right side
    132,491.71x = 13,176,188,829.15
  5. Step 5: Solve for x
    x = 13,176,188,829.15/132,491.71
  6. Step 6: Final answer
    x = 99,449.16

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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.