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Finding the Fourth Proportional to 93,388, 140,083.28 and 31,058.56

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Solution

The fourth proportional to 93,388, 140,083.28 and 31,058.56 is: 46,588.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,388 : 140,083.28 = 31,058.56 : x
  2. Step 2: Convert to fraction form
    93,388/140,083.28 = 31,058.56/x
  3. Step 3: Cross multiply
    93,388x = 140,083.28 × 31,058.56
  4. Step 4: Simplify right side
    93,388x = 4,350,784,956.88
  5. Step 5: Solve for x
    x = 4,350,784,956.88/93,388
  6. Step 6: Final answer
    x = 46,588.27

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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.