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Finding the Fourth Proportional to 159,553.92, 220,181.52 and 86,957.44

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Solution

The fourth proportional to 159,553.92, 220,181.52 and 86,957.44 is: 119,999.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,553.92 : 220,181.52 = 86,957.44 : x
  2. Step 2: Convert to fraction form
    159,553.92/220,181.52 = 86,957.44/x
  3. Step 3: Cross multiply
    159,553.92x = 220,181.52 × 86,957.44
  4. Step 4: Simplify right side
    159,553.92x = 19,146,421,314.51
  5. Step 5: Solve for x
    x = 19,146,421,314.51/159,553.92
  6. Step 6: Final answer
    x = 119,999.69

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1.5x scale

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.