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Finding the Fourth Proportional to 406,008.65, 608,998.39 and 106,486.85

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Solution

The fourth proportional to 406,008.65, 608,998.39 and 106,486.85 is: 159,726.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,008.65 : 608,998.39 = 106,486.85 : x
  2. Step 2: Convert to fraction form
    406,008.65/608,998.39 = 106,486.85/x
  3. Step 3: Cross multiply
    406,008.65x = 608,998.39 × 106,486.85
  4. Step 4: Simplify right side
    406,008.65x = 64,850,316,894.96
  5. Step 5: Solve for x
    x = 64,850,316,894.96/406,008.65
  6. Step 6: Final answer
    x = 159,726.44

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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.