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Finding the Fourth Proportional to 116,457.38, 160,716.96 and 71,128.02

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Solution

The fourth proportional to 116,457.38, 160,716.96 and 71,128.02 is: 98,160.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,457.38 : 160,716.96 = 71,128.02 : x
  2. Step 2: Convert to fraction form
    116,457.38/160,716.96 = 71,128.02/x
  3. Step 3: Cross multiply
    116,457.38x = 160,716.96 × 71,128.02
  4. Step 4: Simplify right side
    116,457.38x = 11,431,479,747.91
  5. Step 5: Solve for x
    x = 11,431,479,747.91/116,457.38
  6. Step 6: Final answer
    x = 98,160.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.