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Finding the Fourth Proportional to 104,435.99, 156,513.67 and 56,979.97

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Solution

The fourth proportional to 104,435.99, 156,513.67 and 56,979.97 is: 85,393.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,435.99 : 156,513.67 = 56,979.97 : x
  2. Step 2: Convert to fraction form
    104,435.99/156,513.67 = 56,979.97/x
  3. Step 3: Cross multiply
    104,435.99x = 156,513.67 × 56,979.97
  4. Step 4: Simplify right side
    104,435.99x = 8,918,144,221.19
  5. Step 5: Solve for x
    x = 8,918,144,221.19/104,435.99
  6. Step 6: Final answer
    x = 85,393.40

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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.