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Finding the Fourth Proportional to 93,920.87, 140,836.70 and 54,490.07

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Solution

The fourth proportional to 93,920.87, 140,836.70 and 54,490.07 is: 81,709.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,920.87 : 140,836.70 = 54,490.07 : x
  2. Step 2: Convert to fraction form
    93,920.87/140,836.70 = 54,490.07/x
  3. Step 3: Cross multiply
    93,920.87x = 140,836.70 × 54,490.07
  4. Step 4: Simplify right side
    93,920.87x = 7,674,200,937.39
  5. Step 5: Solve for x
    x = 7,674,200,937.39/93,920.87
  6. Step 6: Final answer
    x = 81,709.22

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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.