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Finding the Fourth Proportional to 407,881.08, 611,909.01 and 171,087.30

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Solution

The fourth proportional to 407,881.08, 611,909.01 and 171,087.30 is: 256,667.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,881.08 : 611,909.01 = 171,087.30 : x
  2. Step 2: Convert to fraction form
    407,881.08/611,909.01 = 171,087.30/x
  3. Step 3: Cross multiply
    407,881.08x = 611,909.01 × 171,087.30
  4. Step 4: Simplify right side
    407,881.08x = 104,689,860,366.57
  5. Step 5: Solve for x
    x = 104,689,860,366.57/407,881.08
  6. Step 6: Final answer
    x = 256,667.61

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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.