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Finding the Fourth Proportional to 74,652.60, 103,019.04 and 40,661.46

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Solution

The fourth proportional to 74,652.60, 103,019.04 and 40,661.46 is: 56,111.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,652.60 : 103,019.04 = 40,661.46 : x
  2. Step 2: Convert to fraction form
    74,652.60/103,019.04 = 40,661.46/x
  3. Step 3: Cross multiply
    74,652.60x = 103,019.04 × 40,661.46
  4. Step 4: Simplify right side
    74,652.60x = 4,188,904,574.20
  5. Step 5: Solve for x
    x = 4,188,904,574.20/74,652.60
  6. Step 6: Final answer
    x = 56,111.97

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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.