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Finding the Fourth Proportional to 405,358.91, 607,710.11 and 168,878.60

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Solution

The fourth proportional to 405,358.91, 607,710.11 and 168,878.60 is: 253,181.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,358.91 : 607,710.11 = 168,878.60 : x
  2. Step 2: Convert to fraction form
    405,358.91/607,710.11 = 168,878.60/x
  3. Step 3: Cross multiply
    405,358.91x = 607,710.11 × 168,878.60
  4. Step 4: Simplify right side
    405,358.91x = 102,629,228,699.70
  5. Step 5: Solve for x
    x = 102,629,228,699.70/405,358.91
  6. Step 6: Final answer
    x = 253,181.14

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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.