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Finding the Fourth Proportional to 99,403.92, 148,997.40 and 48,837.78

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Solution

The fourth proportional to 99,403.92, 148,997.40 and 48,837.78 is: 73,203.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,403.92 : 148,997.40 = 48,837.78 : x
  2. Step 2: Convert to fraction form
    99,403.92/148,997.40 = 48,837.78/x
  3. Step 3: Cross multiply
    99,403.92x = 148,997.40 × 48,837.78
  4. Step 4: Simplify right side
    99,403.92x = 7,276,702,241.77
  5. Step 5: Solve for x
    x = 7,276,702,241.77/99,403.92
  6. Step 6: Final answer
    x = 73,203.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.