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Finding the Fourth Proportional to 99,208.98, 136,906.93 and 53,887.55

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Solution

The fourth proportional to 99,208.98, 136,906.93 and 53,887.55 is: 74,364.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,208.98 : 136,906.93 = 53,887.55 : x
  2. Step 2: Convert to fraction form
    99,208.98/136,906.93 = 53,887.55/x
  3. Step 3: Cross multiply
    99,208.98x = 136,906.93 × 53,887.55
  4. Step 4: Simplify right side
    99,208.98x = 7,377,579,035.72
  5. Step 5: Solve for x
    x = 7,377,579,035.72/99,208.98
  6. Step 6: Final answer
    x = 74,364.02

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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.