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Finding the Fourth Proportional to 93,216.58, 139,120.62 and 86,896.14

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Solution

The fourth proportional to 93,216.58, 139,120.62 and 86,896.14 is: 129,687.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,216.58 : 139,120.62 = 86,896.14 : x
  2. Step 2: Convert to fraction form
    93,216.58/139,120.62 = 86,896.14/x
  3. Step 3: Cross multiply
    93,216.58x = 139,120.62 × 86,896.14
  4. Step 4: Simplify right side
    93,216.58x = 12,089,044,872.41
  5. Step 5: Solve for x
    x = 12,089,044,872.41/93,216.58
  6. Step 6: Final answer
    x = 129,687.71

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.