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Finding the Fourth Proportional to 74,372.62, 102,596.19 and 47,486.86

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Solution

The fourth proportional to 74,372.62, 102,596.19 and 47,486.86 is: 65,507.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,372.62 : 102,596.19 = 47,486.86 : x
  2. Step 2: Convert to fraction form
    74,372.62/102,596.19 = 47,486.86/x
  3. Step 3: Cross multiply
    74,372.62x = 102,596.19 × 47,486.86
  4. Step 4: Simplify right side
    74,372.62x = 4,871,970,911.06
  5. Step 5: Solve for x
    x = 4,871,970,911.06/74,372.62
  6. Step 6: Final answer
    x = 65,507.59

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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.