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Finding the Fourth Proportional to 159,678.34, 220,351.19 and 88,054.09

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Solution

The fourth proportional to 159,678.34, 220,351.19 and 88,054.09 is: 121,511.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,678.34 : 220,351.19 = 88,054.09 : x
  2. Step 2: Convert to fraction form
    159,678.34/220,351.19 = 88,054.09/x
  3. Step 3: Cross multiply
    159,678.34x = 220,351.19 × 88,054.09
  4. Step 4: Simplify right side
    159,678.34x = 19,402,822,524.72
  5. Step 5: Solve for x
    x = 19,402,822,524.72/159,678.34
  6. Step 6: Final answer
    x = 121,511.93

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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.