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Finding the Fourth Proportional to 93,321.30, 139,865.31 and 73,521.66

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Solution

The fourth proportional to 93,321.30, 139,865.31 and 73,521.66 is: 110,190.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,321.30 : 139,865.31 = 73,521.66 : x
  2. Step 2: Convert to fraction form
    93,321.30/139,865.31 = 73,521.66/x
  3. Step 3: Cross multiply
    93,321.30x = 139,865.31 × 73,521.66
  4. Step 4: Simplify right side
    93,321.30x = 10,283,129,767.61
  5. Step 5: Solve for x
    x = 10,283,129,767.61/93,321.30
  6. Step 6: Final answer
    x = 110,190.60

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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.