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Finding the Fourth Proportional to 85,224.68, 117,541.04 and 74,993.62

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Solution

The fourth proportional to 85,224.68, 117,541.04 and 74,993.62 is: 103,430.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,224.68 : 117,541.04 = 74,993.62 : x
  2. Step 2: Convert to fraction form
    85,224.68/117,541.04 = 74,993.62/x
  3. Step 3: Cross multiply
    85,224.68x = 117,541.04 × 74,993.62
  4. Step 4: Simplify right side
    85,224.68x = 8,814,827,125.49
  5. Step 5: Solve for x
    x = 8,814,827,125.49/85,224.68
  6. Step 6: Final answer
    x = 103,430.46

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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.