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Finding the Fourth Proportional to 93,136.46, 139,028.52 and 86,197.82

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Solution

The fourth proportional to 93,136.46, 139,028.52 and 86,197.82 is: 128,670.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,136.46 : 139,028.52 = 86,197.82 : x
  2. Step 2: Convert to fraction form
    93,136.46/139,028.52 = 86,197.82/x
  3. Step 3: Cross multiply
    93,136.46x = 139,028.52 × 86,197.82
  4. Step 4: Simplify right side
    93,136.46x = 11,983,954,910.84
  5. Step 5: Solve for x
    x = 11,983,954,910.84/93,136.46
  6. Step 6: Final answer
    x = 128,670.93

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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.