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Finding the Fourth Proportional to 103,668.95, 155,503.43 and 33,555.35

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Solution

The fourth proportional to 103,668.95, 155,503.43 and 33,555.35 is: 50,333.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,668.95 : 155,503.43 = 33,555.35 : x
  2. Step 2: Convert to fraction form
    103,668.95/155,503.43 = 33,555.35/x
  3. Step 3: Cross multiply
    103,668.95x = 155,503.43 × 33,555.35
  4. Step 4: Simplify right side
    103,668.95x = 5,217,972,019.85
  5. Step 5: Solve for x
    x = 5,217,972,019.85/103,668.95
  6. Step 6: Final answer
    x = 50,333.03

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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.