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Finding the Fourth Proportional to 168,124.64, 231,893.28 and 100,088.89

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Solution

The fourth proportional to 168,124.64, 231,893.28 and 100,088.89 is: 138,051.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,124.64 : 231,893.28 = 100,088.89 : x
  2. Step 2: Convert to fraction form
    168,124.64/231,893.28 = 100,088.89/x
  3. Step 3: Cross multiply
    168,124.64x = 231,893.28 × 100,088.89
  4. Step 4: Simplify right side
    168,124.64x = 23,209,940,413.93
  5. Step 5: Solve for x
    x = 23,209,940,413.93/168,124.64
  6. Step 6: Final answer
    x = 138,051.99

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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.