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Finding the Fourth Proportional to 159,267.48, 219,784.42 and 87,647.48

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Solution

The fourth proportional to 159,267.48, 219,784.42 and 87,647.48 is: 120,950.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,267.48 : 219,784.42 = 87,647.48 : x
  2. Step 2: Convert to fraction form
    159,267.48/219,784.42 = 87,647.48/x
  3. Step 3: Cross multiply
    159,267.48x = 219,784.42 × 87,647.48
  4. Step 4: Simplify right side
    159,267.48x = 19,263,550,556.26
  5. Step 5: Solve for x
    x = 19,263,550,556.26/159,267.48
  6. Step 6: Final answer
    x = 120,950.93

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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.