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Finding the Fourth Proportional to 205,911.79, 308,745.61 and 63,714.96

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Solution

The fourth proportional to 205,911.79, 308,745.61 and 63,714.96 is: 95,534.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,911.79 : 308,745.61 = 63,714.96 : x
  2. Step 2: Convert to fraction form
    205,911.79/308,745.61 = 63,714.96/x
  3. Step 3: Cross multiply
    205,911.79x = 308,745.61 × 63,714.96
  4. Step 4: Simplify right side
    205,911.79x = 19,671,714,032.04
  5. Step 5: Solve for x
    x = 19,671,714,032.04/205,911.79
  6. Step 6: Final answer
    x = 95,534.67

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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.