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Finding the Fourth Proportional to 93,388.70, 139,954.56 and 40,016.79

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Solution

The fourth proportional to 93,388.70, 139,954.56 and 40,016.79 is: 59,970.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,388.70 : 139,954.56 = 40,016.79 : x
  2. Step 2: Convert to fraction form
    93,388.70/139,954.56 = 40,016.79/x
  3. Step 3: Cross multiply
    93,388.70x = 139,954.56 × 40,016.79
  4. Step 4: Simplify right side
    93,388.70x = 5,600,532,237.06
  5. Step 5: Solve for x
    x = 5,600,532,237.06/93,388.70
  6. Step 6: Final answer
    x = 59,970.13

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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.