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Finding the Fourth Proportional to 99,188.66, 136,879.52 and 53,867.82

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Solution

The fourth proportional to 99,188.66, 136,879.52 and 53,867.82 is: 74,337.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,188.66 : 136,879.52 = 53,867.82 : x
  2. Step 2: Convert to fraction form
    99,188.66/136,879.52 = 53,867.82/x
  3. Step 3: Cross multiply
    99,188.66x = 136,879.52 × 53,867.82
  4. Step 4: Simplify right side
    99,188.66x = 7,373,401,345.05
  5. Step 5: Solve for x
    x = 7,373,401,345.05/99,188.66
  6. Step 6: Final answer
    x = 74,337.14

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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.