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Finding the Fourth Proportional to 111,457.05, 153,808.08 and 61,727.97

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Solution

The fourth proportional to 111,457.05, 153,808.08 and 61,727.97 is: 85,183.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,457.05 : 153,808.08 = 61,727.97 : x
  2. Step 2: Convert to fraction form
    111,457.05/153,808.08 = 61,727.97/x
  3. Step 3: Cross multiply
    111,457.05x = 153,808.08 × 61,727.97
  4. Step 4: Simplify right side
    111,457.05x = 9,494,260,548.00
  5. Step 5: Solve for x
    x = 9,494,260,548.00/111,457.05
  6. Step 6: Final answer
    x = 85,183.13

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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.