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Finding the Fourth Proportional to 93,455.84, 139,954.77 and 84,469.70

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Solution

The fourth proportional to 93,455.84, 139,954.77 and 84,469.70 is: 126,497.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,455.84 : 139,954.77 = 84,469.70 : x
  2. Step 2: Convert to fraction form
    93,455.84/139,954.77 = 84,469.70/x
  3. Step 3: Cross multiply
    93,455.84x = 139,954.77 × 84,469.70
  4. Step 4: Simplify right side
    93,455.84x = 11,821,937,785.36
  5. Step 5: Solve for x
    x = 11,821,937,785.36/93,455.84
  6. Step 6: Final answer
    x = 126,497.58

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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.