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Finding the Fourth Proportional to 103,555.88, 155,311.68 and 33,416.36

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Solution

The fourth proportional to 103,555.88, 155,311.68 and 33,416.36 is: 50,117.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,555.88 : 155,311.68 = 33,416.36 : x
  2. Step 2: Convert to fraction form
    103,555.88/155,311.68 = 33,416.36/x
  3. Step 3: Cross multiply
    103,555.88x = 155,311.68 × 33,416.36
  4. Step 4: Simplify right side
    103,555.88x = 5,189,951,011.08
  5. Step 5: Solve for x
    x = 5,189,951,011.08/103,555.88
  6. Step 6: Final answer
    x = 50,117.40

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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.