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Finding the Fourth Proportional to 93,301.88, 139,952.81 and 30,972.38

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Solution

The fourth proportional to 93,301.88, 139,952.81 and 30,972.38 is: 46,458.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,301.88 : 139,952.81 = 30,972.38 : x
  2. Step 2: Convert to fraction form
    93,301.88/139,952.81 = 30,972.38/x
  3. Step 3: Cross multiply
    93,301.88x = 139,952.81 × 30,972.38
  4. Step 4: Simplify right side
    93,301.88x = 4,334,670,991.05
  5. Step 5: Solve for x
    x = 4,334,670,991.05/93,301.88
  6. Step 6: Final answer
    x = 46,458.56

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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.