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Finding the Fourth Proportional to 405,173.92, 607,761.32 and 105,654.24

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Solution

The fourth proportional to 405,173.92, 607,761.32 and 105,654.24 is: 158,481.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,173.92 : 607,761.32 = 105,654.24 : x
  2. Step 2: Convert to fraction form
    405,173.92/607,761.32 = 105,654.24/x
  3. Step 3: Cross multiply
    405,173.92x = 607,761.32 × 105,654.24
  4. Step 4: Simplify right side
    405,173.92x = 64,212,560,366.00
  5. Step 5: Solve for x
    x = 64,212,560,366.00/405,173.92
  6. Step 6: Final answer
    x = 158,481.47

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1.5x scale

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.