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Finding the Fourth Proportional to 171,607.11, 236,808.14 and 99,998.79

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Solution

The fourth proportional to 171,607.11, 236,808.14 and 99,998.79 is: 137,992.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,607.11 : 236,808.14 = 99,998.79 : x
  2. Step 2: Convert to fraction form
    171,607.11/236,808.14 = 99,998.79/x
  3. Step 3: Cross multiply
    171,607.11x = 236,808.14 × 99,998.79
  4. Step 4: Simplify right side
    171,607.11x = 23,680,526,962.16
  5. Step 5: Solve for x
    x = 23,680,526,962.16/171,607.11
  6. Step 6: Final answer
    x = 137,992.69

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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.