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Finding the Fourth Proportional to 93,954.65, 140,931.97 and 81,266.69

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Solution

The fourth proportional to 93,954.65, 140,931.97 and 81,266.69 is: 121,900.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,954.65 : 140,931.97 = 81,266.69 : x
  2. Step 2: Convert to fraction form
    93,954.65/140,931.97 = 81,266.69/x
  3. Step 3: Cross multiply
    93,954.65x = 140,931.97 × 81,266.69
  4. Step 4: Simplify right side
    93,954.65x = 11,453,074,717.08
  5. Step 5: Solve for x
    x = 11,453,074,717.08/93,954.65
  6. Step 6: Final answer
    x = 121,900.03

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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.