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Finding the Fourth Proportional to 93,141, 139,724.64 and 29,939.94

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Solution

The fourth proportional to 93,141, 139,724.64 and 29,939.94 is: 44,914.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,141 : 139,724.64 = 29,939.94 : x
  2. Step 2: Convert to fraction form
    93,141/139,724.64 = 29,939.94/x
  3. Step 3: Cross multiply
    93,141x = 139,724.64 × 29,939.94
  4. Step 4: Simplify right side
    93,141x = 4,183,347,338.12
  5. Step 5: Solve for x
    x = 4,183,347,338.12/93,141
  6. Step 6: Final answer
    x = 44,914.13

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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.