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Finding the Fourth Proportional to 93,195.90, 139,655.61 and 68,450.94

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Solution

The fourth proportional to 93,195.90, 139,655.61 and 68,450.94 is: 102,574.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,195.90 : 139,655.61 = 68,450.94 : x
  2. Step 2: Convert to fraction form
    93,195.90/139,655.61 = 68,450.94/x
  3. Step 3: Cross multiply
    93,195.90x = 139,655.61 × 68,450.94
  4. Step 4: Simplify right side
    93,195.90x = 9,559,557,780.77
  5. Step 5: Solve for x
    x = 9,559,557,780.77/93,195.90
  6. Step 6: Final answer
    x = 102,574.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.