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Finding the Fourth Proportional to 74,995.92, 103,400.28 and 48,090.96

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Solution

The fourth proportional to 74,995.92, 103,400.28 and 48,090.96 is: 66,305.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,995.92 : 103,400.28 = 48,090.96 : x
  2. Step 2: Convert to fraction form
    74,995.92/103,400.28 = 48,090.96/x
  3. Step 3: Cross multiply
    74,995.92x = 103,400.28 × 48,090.96
  4. Step 4: Simplify right side
    74,995.92x = 4,972,618,729.47
  5. Step 5: Solve for x
    x = 4,972,618,729.47/74,995.92
  6. Step 6: Final answer
    x = 66,305.19

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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.