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Finding the Fourth Proportional to 66,062.96, 91,242.60 and 43,502.81

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Solution

The fourth proportional to 66,062.96, 91,242.60 and 43,502.81 is: 60,083.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,062.96 : 91,242.60 = 43,502.81 : x
  2. Step 2: Convert to fraction form
    66,062.96/91,242.60 = 43,502.81/x
  3. Step 3: Cross multiply
    66,062.96x = 91,242.60 × 43,502.81
  4. Step 4: Simplify right side
    66,062.96x = 3,969,309,491.71
  5. Step 5: Solve for x
    x = 3,969,309,491.71/66,062.96
  6. Step 6: Final answer
    x = 60,083.74

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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.