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Finding the Fourth Proportional to 104,651.80, 156,977.70 and 55,499.80

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Solution

The fourth proportional to 104,651.80, 156,977.70 and 55,499.80 is: 83,249.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,651.80 : 156,977.70 = 55,499.80 : x
  2. Step 2: Convert to fraction form
    104,651.80/156,977.70 = 55,499.80/x
  3. Step 3: Cross multiply
    104,651.80x = 156,977.70 × 55,499.80
  4. Step 4: Simplify right side
    104,651.80x = 8,712,230,954.46
  5. Step 5: Solve for x
    x = 8,712,230,954.46/104,651.80
  6. Step 6: Final answer
    x = 83,249.70

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1.5x scale

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.