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Finding the Fourth Proportional to 355,871.78, 533,813.84 and 131,116.52

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Solution

The fourth proportional to 355,871.78, 533,813.84 and 131,116.52 is: 196,677.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,871.78 : 533,813.84 = 131,116.52 : x
  2. Step 2: Convert to fraction form
    355,871.78/533,813.84 = 131,116.52/x
  3. Step 3: Cross multiply
    355,871.78x = 533,813.84 × 131,116.52
  4. Step 4: Simplify right side
    355,871.78x = 69,991,809,703.99
  5. Step 5: Solve for x
    x = 69,991,809,703.99/355,871.78
  6. Step 6: Final answer
    x = 196,677.05

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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.